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Bộ đề luyện thi THPTQG Hóa Học cực hay có lời giải chi tiết (Đề số 9)

Để tác dụng hết a mol triolein cần dùng tối đa 0,6 mol Br2 trong dung dịch. Giá trị của a bằng.

Hóa học Tốt nghiệp THPT
Xem chi tiết 882 lượt xem 5 năm trước
30 đề thi thử đề thi thử THPTQG môn Tiếng Anh có lời giải chi tiết (Đề số 24)

 Read the following passage on commuting, and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 51 to 60.Many folk cures which have been around for centuries may be more therapeutic than previously suspected. A case in point is that of penicillin Alexander Fleming did not just randomly choose cheese molds to study when he discovered this very important bacteria-killing substance. Moldy cheese was frequently given to patients as a remedy for illness at one time Fleming just isolated what it was about the cheese which cured the patients.In parts of South America, a powder obtained from grinding sugar cane is used for healing infections in wounds and ulcers. This usage may date back to pre-Colombian times. Experiments carried out on several hundred patients indicate that ordinary sugar in high concentrations is lethal to bacteria. Its suction effect eliminates dead cells and it generates a glasslike layer which protects the wound and ensures healing.Another example of folk medicine which scientists are investigating is that of Arab fishermen who rub their wounds with a venomous catfish to quicken healing. This catfish excretes a gellike slime which scientist found to contain antibiotics coagulant that helps close injured blood vessels, anti-inflammatory agents, and a chemical that directs production of a glue-like material that aids healing.It is hoped that by documenting these folk remedies and experimenting to see if results are indeed beneficial, an analysis of the substance be made, and synthetic substances be developed for human consumption. The gellike substance which promotes healing comes from_________. 

Tiếng Anh Tốt nghiệp THPT
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Amin (CH3)2CH-NH-CH3 có tên gọi là

Hóa học Lớp 12
Xem chi tiết 25.7 K lượt xem 5 năm trước
Tổng hợp đề thi thử mới nhất môn tiếng anh cực hay có lời giải (P7)

Mark the letter A, B, C or D on your answer sheet to indicate the word whose underlined part differs from other three in pronunciation in each of the following questions.

Tiếng Anh Tốt nghiệp THPT
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Tổng hợp đề thi thử mới nhất môn tiếng anh cực hay có lời giải (P7)

Mark the letter A, B, C, or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions. (A) Hardly he had entered (B) the office when he realized (C) that he had (D) forgotten his wallet

Tiếng Anh Tốt nghiệp THPT
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30 đề thi thử đề thi thử THPTQG môn Tiếng Anh có lời giải chi tiết (Đề số 24)

Read the following passage on commuting, and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 51 to 60.Many folk cures which have been around for centuries may be more therapeutic than previously suspected. A case in point is that of penicillin Alexander Fleming did not just randomly choose cheese molds to study when he discovered this very important bacteria-killing substance. Moldy cheese was frequently given to patients as a remedy for illness at one time Fleming just isolated what it was about the cheese which cured the patients.In parts of South America, a powder obtained from grinding sugar cane is used for healing infections in wounds and ulcers. This usage may date back to pre-Colombian times. Experiments carried out on several hundred patients indicate that ordinary sugar in high concentrations is lethal to bacteria. Its suction effect eliminates dead cells and it generates a glasslike layer which protects the wound and ensures healing.Another example of folk medicine which scientists are investigating is that of Arab fishermen who rub their wounds with a venomous catfish to quicken healing. This catfish excretes a gellike slime which scientist found to contain antibiotics coagulant that helps close injured blood vessels, anti-inflammatory agents, and a chemical that directs production of a glue-like material that aids healing.It is hoped that by documenting these folk remedies and experimenting to see if results are indeed beneficial, an analysis of the substance be made, and synthetic substances be developed for human consumption.To the passage,_________. 

Tiếng Anh Tốt nghiệp THPT
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Tổng hợp đề thi thử mới nhất môn tiếng anh cực hay có lời giải (P7)

Mark the letter A, B, C, or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions.(A) I've just (B) spoken to Sally, (C) that send you (D) her love.

Tiếng Anh Tốt nghiệp THPT
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Bộ đề luyện thi THPTQG Hóa Học cực hay có lời giải chi tiết (Đề số 9)

Polime nào sau đây được điều chế bằng phản ứng trùng ngưng?

Hóa học Tốt nghiệp THPT
Xem chi tiết 462 lượt xem 5 năm trước
30 đề thi thử đề thi thử THPTQG môn Tiếng Anh có lời giải chi tiết (Đề số 24)

Read the following passage on commuting, and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 51 to 60.Many folk cures which have been around for centuries may be more therapeutic than previously suspected. A case in point is that of penicillin Alexander Fleming did not just randomly choose cheese molds to study when he discovered this very important bacteria-killing substance. Moldy cheese was frequently given to patients as a remedy for illness at one time Fleming just isolated what it was about the cheese which cured the patients.In parts of South America, a powder obtained from grinding sugar cane is used for healing infections in wounds and ulcers. This usage may date back to pre-Colombian times. Experiments carried out on several hundred patients indicate that ordinary sugar in high concentrations is lethal to bacteria. Its suction effect eliminates dead cells and it generates a glasslike layer which protects the wound and ensures healing.Another example of folk medicine which scientists are investigating is that of Arab fishermen who rub their wounds with a venomous catfish to quicken healing. This catfish excretes a gellike slime which scientist found to contain antibiotics coagulant that helps close injured blood vessels, anti-inflammatory agents, and a chemical that directs production of a glue-like material that aids healing.It is hoped that by documenting these folk remedies and experimenting to see if results are indeed beneficial, an analysis of the substance be made, and synthetic substances be developed for human consumption.The word "eliminates" in paragraph 2 is closest in meaning to_________. 

Tiếng Anh Tốt nghiệp THPT
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Tổng hợp đề thi thử mới nhất môn tiếng anh cực hay có lời giải (P7)

Mark the letter A, B, C, or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions.(A)  My sister told me that (B) she had met my teacher (C) at the supermarket  (D) yesterday

Tiếng Anh Tốt nghiệp THPT
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Kỳ thi thử thpt quốc gia lần 1 năm 2019 môn Tiếng Anh cực hay có lời giải(Đề 3)

BÀI ĐỌC NGẮNĐọc đoạn văn và trả lời 10 câu hỏi kèm theo.Line  5  10    15    20The yêm is  an  ancient  common  upper-body  garment  for Vietnamese  girls  and  women  for thousands  of  years  until  after  World  War  II,  when  Western  dressing  style  entered  and  became popular.A yêm was a sexy simply-cut piece of usually simple cloth, which could be either outerwear or  undershirt.  As  Vietnam  has  a  tropical  climate  with  hot  and  humid  summers,  the  lighter  and airier the clothes are the better. The yêm was the solution in the old days for Vietnamese people to the environment. Colours and materials of the yêm reflected the woman’s age and social status. Older women tended to wear round-necked, and younger ones the v-neck style. The working-class women wore dark colours such as black, beige, or brown, and coarse cloth, while the elite opted for more festive, brighter tones such as red and pink or white, normally in dedicate cloth such as silk or satin.Throughout history, the design of the yêm stayed almost the same. However, there was much room for flexibility. When a woman was young, she tied the strings loosely to let the neck come lower, especially when she wore necklaces. When she got older, she pulled the strings tighter to raise the neck higher. This is a good example of the Vietnamese dressing style – simplicity but with a height of delicacy and sexiness.The yêm dates to the Hung Kings (2879 BC - 258 AD). Evidence can be found in the images of women in decoration on a Dong Xa bronze drum, cast over 2,000 years ago. It made its way down to around  1945 as a traditional costume exclusively of Vietnamese women. Photos of Vietnamese women in the 1940s still showed some of them wearing the yêm. From the mid-20th century, along with the decline  of the yêm to give way for Western dressing trends, many traditions disappeared, such as tying the hair around the head, or having the teeth dyed. Recently, the yêm is making a comeback, but only on the catwalk.Which of the following statement is NOT mentioned in the passage about the yêm?

Tiếng Anh Tốt nghiệp THPT
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Tên gọi của C6H5-NH-CH3 là

Hóa học Lớp 12
Xem chi tiết 31.3 K lượt xem 7 tháng trước
Bộ đề luyện thi THPTQG Hóa Học cực hay có lời giải chi tiết (Đề số 9)

Công thức nào sau đây có thể là công thức của chất béo

Hóa học Tốt nghiệp THPT
Xem chi tiết 479 lượt xem 5 năm trước
Kỳ thi thử thpt quốc gia lần 1 năm 2019 môn Tiếng Anh cực hay có lời giải(Đề 3)

BÀI ĐỌC NGẮNĐọc đoạn văn và trả lời 10 câu hỏi kèm theo.Line  5  10    15    20The yêm is  an  ancient  common  upper-body  garment  for Vietnamese  girls  and  women  for thousands  of  years  until  after  World  War  II,  when  Western  dressing  style  entered  and  became popular.A yêm was a sexy simply-cut piece of usually simple cloth, which could be either outerwear or  undershirt.  As  Vietnam  has  a  tropical  climate  with  hot  and  humid  summers,  the  lighter  and airier the clothes are the better. The yêm was the solution in the old days for Vietnamese people to the environment. Colours and materials of the yêm reflected the woman’s age and social status. Older women tended to wear round-necked, and younger ones the v-neck style. The working-class women wore dark colours such as black, beige, or brown, and coarse cloth, while the elite opted for more festive, brighter tones such as red and pink or white, normally in dedicate cloth such as silk or satin.Throughout history, the design of the yêm stayed almost the same. However, there was much room for flexibility. When a woman was young, she tied the strings loosely to let the neck come lower, especially when she wore necklaces. When she got older, she pulled the strings tighter to raise the neck higher. This is a good example of the Vietnamese dressing style – simplicity but with a height of delicacy and sexiness.The yêm dates to the Hung Kings (2879 BC - 258 AD). Evidence can be found in the images of women in decoration on a Dong Xa bronze drum, cast over 2,000 years ago. It made its way down to around  1945 as a traditional costume exclusively of Vietnamese women. Photos of Vietnamese women in the 1940s still showed some of them wearing the yêm. From the mid-20th century, along with the decline  of the yêm to give way for Western dressing trends, many traditions disappeared, such as tying the hair around the head, or having the teeth dyed. Recently, the yêm is making a comeback, but only on the catwalk.In the third paragraph, what best paraphrases the sentence “It made its way down to around 1945 as a traditional costume exclusively of Vietnamese women.”?

Tiếng Anh Tốt nghiệp THPT
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30 đề thi thử đề thi thử THPTQG môn Tiếng Anh có lời giải chi tiết (Đề số 24)

Read the following passage on commuting, and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 51 to 60.Many folk cures which have been around for centuries may be more therapeutic than previously suspected. A case in point is that of penicillin Alexander Fleming did not just randomly choose cheese molds to study when he discovered this very important bacteria-killing substance. Moldy cheese was frequently given to patients as a remedy for illness at one time Fleming just isolated what it was about the cheese which cured the patients.In parts of South America, a powder obtained from grinding sugar cane is used for healing infections in wounds and ulcers. This usage may date back to pre-Colombian times. Experiments carried out on several hundred patients indicate that ordinary sugar in high concentrations is lethal to bacteria. Its suction effect eliminates dead cells and it generates a glasslike layer which protects the wound and ensures healing.Another example of folk medicine which scientists are investigating is that of Arab fishermen who rub their wounds with a venomous catfish to quicken healing. This catfish excretes a gellike slime which scientist found to contain antibiotics coagulant that helps close injured blood vessels, anti-inflammatory agents, and a chemical that directs production of a glue-like material that aids healing.It is hoped that by documenting these folk remedies and experimenting to see if results are indeed beneficial, an analysis of the substance be made, and synthetic substances be developed for human consumption.It can be inferred from the Message that Alexander Fleming_________. 

Tiếng Anh Tốt nghiệp THPT
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Tổng hợp đề thi thử mới nhất môn tiếng anh cực hay có lời giải (P7)

Mark the letter A, B, C, or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions.(A) It was not until (B) after midnight  (C) when the noise next door (D) stopped.

Tiếng Anh Tốt nghiệp THPT
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Tên gọi amin nào sau đây là không đúng? 

Hóa học Lớp 12
Xem chi tiết 22.9 K lượt xem 5 năm trước
Kỳ thi thử thpt quốc gia lần 1 năm 2019 môn Tiếng Anh cực hay có lời giải(Đề 3)

Đọc đoạn văn và trả lời 10 câu hỏi kèm theo.Line  5  10    15    20The yêm is  an  ancient  common  upper-body  garment  for Vietnamese  girls  and  women  for thousands  of  years  until  after  World  War  II,  when  Western  dressing  style  entered  and  became popular.A yêm was a sexy simply-cut piece of usually simple cloth, which could be either outerwear or  undershirt.  As  Vietnam  has  a  tropical  climate  with  hot  and  humid  summers,  the  lighter  and airier the clothes are the better. The yêm was the solution in the old days for Vietnamese people to the environment. Colours and materials of the yêm reflected the woman’s age and social status. Older women tended to wear round-necked, and younger ones the v-neck style. The working-class women wore dark colours such as black, beige, or brown, and coarse cloth, while the elite opted for more festive, brighter tones such as red and pink or white, normally in dedicate cloth such as silk or satin.Throughout history, the design of the yêm stayed almost the same. However, there was much room for flexibility. When a woman was young, she tied the strings loosely to let the neck come lower, especially when she wore necklaces. When she got older, she pulled the strings tighter to raise the neck higher. This is a good example of the Vietnamese dressing style – simplicity but with a height of delicacy and sexiness.The yêm dates to the Hung Kings (2879 BC - 258 AD). Evidence can be found in the images of women in decoration on a Dong Xa bronze drum, cast over 2,000 years ago. It made its way down to around  1945 as a traditional costume exclusively of Vietnamese women. Photos of Vietnamese women in the 1940s still showed some of them wearing the yêm. From the mid-20th century, along with the decline  of the yêm to give way for Western dressing trends, many traditions disappeared, such as tying the hair around the head, or having the teeth dyed. Recently, the yêm is making a comeback, but only on the catwalk.According to the passage, what is considered as the factor causing the decline of the yêm?

Tiếng Anh Tốt nghiệp THPT
Xem chi tiết 534 lượt xem 5 năm trước
30 đề thi thử đề thi thử THPTQG môn Tiếng Anh có lời giải chi tiết (Đề số 24)

Read the following passage on commuting, and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 51 to 60.Many folk cures which have been around for centuries may be more therapeutic than previously suspected. A case in point is that of penicillin Alexander Fleming did not just randomly choose cheese molds to study when he discovered this very important bacteria-killing substance. Moldy cheese was frequently given to patients as a remedy for illness at one time Fleming just isolated what it was about the cheese which cured the patients.In parts of South America, a powder obtained from grinding sugar cane is used for healing infections in wounds and ulcers. This usage may date back to pre-Colombian times. Experiments carried out on several hundred patients indicate that ordinary sugar in high concentrations is lethal to bacteria. Its suction effect eliminates dead cells and it generates a glasslike layer which protects the wound and ensures healing.Another example of folk medicine which scientists are investigating is that of Arab fishermen who rub their wounds with a venomous catfish to quicken healing. This catfish excretes a gellike slime which scientist found to contain antibiotics coagulant that helps close injured blood vessels, anti-inflammatory agents, and a chemical that directs production of a glue-like material that aids healing.It is hoped that by documenting these folk remedies and experimenting to see if results are indeed beneficial, an analysis of the substance be made, and synthetic substances be developed for human consumption.The word "therapeutic" in paragraph 1 is closest in meaning to_________. 

Tiếng Anh Tốt nghiệp THPT
Xem chi tiết 476 lượt xem 5 năm trước
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Hợp chất CH3NHCH2CH3 có tên đúng là 

Hóa học Lớp 12
Xem chi tiết 19 K lượt xem 5 năm trước
Tổng hợp đề thi thử mới nhất môn tiếng anh cực hay có lời giải (P7)

Mark the letter A, B, C, or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions.(A) To attract someone's attention (B) we can use either verbal (C) and  non- verbal forms of (D) communication.

Tiếng Anh Tốt nghiệp THPT
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Kỳ thi thử thpt quốc gia lần 1 năm 2019 môn Tiếng Anh cực hay có lời giải(Đề 3)

BÀI ĐỌC NGẮNĐọc đoạn văn và trả lời 10 câu hỏi kèm theo.Line  5  10    15    20The yêm is  an  ancient  common  upper-body  garment  for Vietnamese  girls  and  women  for thousands  of  years  until  after  World  War  II,  when  Western  dressing  style  entered  and  became popular.A yêm was a sexy simply-cut piece of usually simple cloth, which could be either outerwear or  undershirt.  As  Vietnam  has  a  tropical  climate  with  hot  and  humid  summers,  the  lighter  and airier the clothes are the better. The yêm was the solution in the old days for Vietnamese people to the environment. Colours and materials of the yêm reflected the woman’s age and social status. Older women tended to wear round-necked, and younger ones the v-neck style. The working-class women wore dark colours such as black, beige, or brown, and coarse cloth, while the elite opted for more festive, brighter tones such as red and pink or white, normally in dedicate cloth such as silk or satin.Throughout history, the design of the yêm stayed almost the same. However, there was much room for flexibility. When a woman was young, she tied the strings loosely to let the neck come lower, especially when she wore necklaces. When she got older, she pulled the strings tighter to raise the neck higher. This is a good example of the Vietnamese dressing style – simplicity but with a height of delicacy and sexiness.The yêm dates to the Hung Kings (2879 BC - 258 AD). Evidence can be found in the images of women in decoration on a Dong Xa bronze drum, cast over 2,000 years ago. It made its way down to around  1945 as a traditional costume exclusively of Vietnamese women. Photos of Vietnamese women in the 1940s still showed some of them wearing the yêm. From the mid-20th century, along with the decline  of the yêm to give way for Western dressing trends, many traditions disappeared, such as tying the hair around the head, or having the teeth dyed. Recently, the yêm is making a comeback, but only on the catwalk.Where in the passage can a summary of the yêm’s style be found?

Tiếng Anh Tốt nghiệp THPT
Xem chi tiết 277 lượt xem 5 năm trước
30 đề thi thử đề thi thử THPTQG môn Tiếng Anh có lời giải chi tiết (Đề số 24)

Read the following passage on commuting, and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 51 to 60.Many folk cures which have been around for centuries may be more therapeutic than previously suspected. A case in point is that of penicillin Alexander Fleming did not just randomly choose cheese molds to study when he discovered this very important bacteria-killing substance. Moldy cheese was frequently given to patients as a remedy for illness at one time Fleming just isolated what it was about the cheese which cured the patients.In parts of South America, a powder obtained from grinding sugar cane is used for healing infections in wounds and ulcers. This usage may date back to pre-Colombian times. Experiments carried out on several hundred patients indicate that ordinary sugar in high concentrations is lethal to bacteria. Its suction effect eliminates dead cells and it generates a glasslike layer which protects the wound and ensures healing.Another example of folk medicine which scientists are investigating is that of Arab fishermen who rub their wounds with a venomous catfish to quicken healing. This catfish excretes a gellike slime which scientist found to contain antibiotics coagulant that helps close injured blood vessels, anti-inflammatory agents, and a chemical that directs production of a glue-like material that aids healing.It is hoped that by documenting these folk remedies and experimenting to see if results are indeed beneficial, an analysis of the substance be made, and synthetic substances be developed for human consumption. This passage is mainly about_________.

Tiếng Anh Tốt nghiệp THPT
Xem chi tiết 637 lượt xem 5 năm trước
Tổng hợp đề thi thử mới nhất môn tiếng anh cực hay có lời giải (P7)

Mark the letter A, B, C or D on your answer sheet to indicate the word(s) OPPOSITE in meaning to the underlined word(s) in each of the following questions.We offer a speedy and secure service of transferring money in less than 24 hours

Tiếng Anh Tốt nghiệp THPT
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Tổng hợp đề thi thử mới nhất môn tiếng anh cực hay có lời giải (P7)

Mark the letter A, B, C or D on your answer sheet to indicate the word(s) OPPOSITE in meaning to the underlined word(s) in each of the following questions.During the five-decade history the Asian Games have been advancing in all aspects.

Tiếng Anh Tốt nghiệp THPT
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30 đề thi thử đề thi thử THPTQG môn Tiếng Anh có lời giải chi tiết (Đề số 24)

VI/ Read the following passage on native Americans, and mark the letter A, B, C or D on your answer sheet to indicate the correct word or phrase for each of the blanks from 41 to 50. WORKING MOTHERSCarefully conducted (41)_________that have followed the children of working mothers have not been able to shown any long-term problems, compared with children of working mothers stayed at home. My personal (42)_________is that mothers should be allowed to work if they wish. Whether we like it or not, there a number of mothers who just have to work. There are those who have invested such a big part of their lives in establishing a career that they cannot afford to see it lost. Then there are many who must work out of pure economic (43)_________. Many mothers are not (44)_________out to be full-time parents. After a few months at home with a much_________loved infant, they feel trapped and isolated.There are a number of options when it (45)_________to choosing childcare. These range from child minders and nannies through to Granny of the kind lady (46)_________the street. (47)_________, however, many parents don’t have any choice; they have to accept anything they can get. Be prepared! No matter how good the childcare may be, some children are going to protest wildly if they are left. This is a (48)_________normal stage of child development. Babies separate well in the first six months, but soon after that they start to get a crush on Mum and close family members. Make sure that in first week you allow plenty of time to help your child settle in.All children are different. Some are independent, while others are more attached to their mothers. Remember that if you want to (49)_________the best for your children, it’s not the quantity of time you spend with them, it’s the (50)_________that matters.Điền vào đáp án 50

Tiếng Anh Tốt nghiệp THPT
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Tên gọi nào sau đây ứng với công thức cấu tạo CH3CH2NH2? 

Hóa học Lớp 12
Xem chi tiết 6.2 K lượt xem 5 năm trước
Bộ đề luyện thi THPTQG Hóa Học cực hay có lời giải chi tiết (Đề số 9)

Trong hóa học vô cơ, phản ứng nào sau đây thuộc loại phản ứng oxi hóa - khử?

Hóa học Tốt nghiệp THPT
Xem chi tiết 631 lượt xem 5 năm trước
Tổng hợp đề thi thử mới nhất môn tiếng anh cực hay có lời giải (P7)

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 24 to 33.Since the world became industrialized, the number of animal species that have either become extinct or have neared extinction has increased. Bengal tigers, for instance, which once roamed the jungles in vast numbers, now number only about 2,300. By the year 2025, it is estimated that they will become extinct. What is alarming about the case of the Bengal tiger is that this extinction will have been caused almost entirely by poachers who, according to some sources, are not always interested in material gain but in personal gratification. This is an example of the callousness that is contributing to the problem of extinction. Animals such as the Bengal tiger, as well as other endangered species, are valuable parts of the world's ecosystem. International laws protecting these animals must be enacted to ensure their survival - and the survival of our planet.Countries around the world have begun to deal with the problem in various ways. Some countries, in an effort to circumvent the problem, have allocated large amounts of land to animal reserves. They then charge admission prices to help defray the costs of maintaining the parks, and they often must also depend on world organizations for support. This money enables them to invest in equipment and patrols to protect the animals. Another response to the increase in animal extinction is an international boycott of products made from endangered species. This has had some effect, but by itself it will not prevent animals from being hunted and killed. The word 'defray' in line 12 is closest in meaning to which of the following?

Tiếng Anh Tốt nghiệp THPT
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Trong các tên gọi dưới đây, tên phù hợp với chất : CH3-CH(CH3)-NH2

Hóa học Lớp 12
Xem chi tiết 14 K lượt xem 5 năm trước
Tổng hợp đề thi thử mới nhất môn tiếng anh cực hay có lời giải (P7)

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 24 to 33.Since the world became industrialized, the number of animal species that have either become extinct or have neared extinction has increased. Bengal tigers, for instance, which once roamed the jungles in vast numbers, now number only about 2,300. By the year 2025, it is estimated that they will become extinct. What is alarming about the case of the Bengal tiger is that this extinction will have been caused almost entirely by poachers who, according to some sources, are not always interested in material gain but in personal gratification. This is an example of the callousness that is contributing to the problem of extinction. Animals such as the Bengal tiger, as well as other endangered species, are valuable parts of the world's ecosystem. International laws protecting these animals must be enacted to ensure their survival - and the survival of our planet.Countries around the world have begun to deal with the problem in various ways. Some countries, in an effort to circumvent the problem, have allocated large amounts of land to animal reserves. They then charge admission prices to help defray the costs of maintaining the parks, and they often must also depend on world organizations for support. This money enables them to invest in equipment and patrols to protect the animals. Another response to the increase in animal extinction is an international boycott of products made from endangered species. This has had some effect, but by itself it will not prevent animals from being hunted and killed. Which of the following could best replace the word 'allocated' in line 11? 

Tiếng Anh Tốt nghiệp THPT
Xem chi tiết 660 lượt xem 5 năm trước
30 đề thi thử đề thi thử THPTQG môn Tiếng Anh có lời giải chi tiết (Đề số 24)

VI/ Read the following passage on native Americans, and mark the letter A, B, C or D on your answer sheet to indicate the correct word or phrase for each of the blanks from 41 to 50. WORKING MOTHERSCarefully conducted (41)_________that have followed the children of working mothers have not been able to shown any long-term problems, compared with children of working mothers stayed at home. My personal (42)_________is that mothers should be allowed to work if they wish. Whether we like it or not, there a number of mothers who just have to work. There are those who have invested such a big part of their lives in establishing a career that they cannot afford to see it lost. Then there are many who must work out of pure economic (43)_________. Many mothers are not (44)_________out to be full-time parents. After a few months at home with a much_________loved infant, they feel trapped and isolated.There are a number of options when it (45)_________to choosing childcare. These range from child minders and nannies through to Granny of the kind lady (46)_________the street. (47)_________, however, many parents don’t have any choice; they have to accept anything they can get. Be prepared! No matter how good the childcare may be, some children are going to protest wildly if they are left. This is a (48)_________normal stage of child development. Babies separate well in the first six months, but soon after that they start to get a crush on Mum and close family members. Make sure that in first week you allow plenty of time to help your child settle in.All children are different. Some are independent, while others are more attached to their mothers. Remember that if you want to (49)_________the best for your children, it’s not the quantity of time you spend with them, it’s the (50)_________that matters.Điền vào đáp án 49

Tiếng Anh Tốt nghiệp THPT
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Tổng hợp đề thi thử mới nhất môn tiếng anh cực hay có lời giải (P7)

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 24 to 33.Since the world became industrialized, the number of animal species that have either become extinct or have neared extinction has increased. Bengal tigers, for instance, which once roamed the jungles in vast numbers, now number only about 2,300. By the year 2025, it is estimated that they will become extinct. What is alarming about the case of the Bengal tiger is that this extinction will have been caused almost entirely by poachers who, according to some sources, are not always interested in material gain but in personal gratification. This is an example of the callousness that is contributing to the problem of extinction. Animals such as the Bengal tiger, as well as other endangered species, are valuable parts of the world's ecosystem. International laws protecting these animals must be enacted to ensure their survival - and the survival of our planet.Countries around the world have begun to deal with the problem in various ways. Some countries, in an effort to circumvent the problem, have allocated large amounts of land to animal reserves. They then charge admission prices to help defray the costs of maintaining the parks, and they often must also depend on world organizations for support. This money enables them to invest in equipment and patrols to protect the animals. Another response to the increase in animal extinction is an international boycott of products made from endangered species. This has had some effect, but by itself it will not prevent animals from being hunted and killed. Where in the passage does the author discuss a cause of extinction?

Tiếng Anh Tốt nghiệp THPT
Xem chi tiết 3.5 K lượt xem 5 năm trước
Danh pháp

Hợp chất CH3CH2NH2 có tên gọi là 

Hóa học Lớp 12
Xem chi tiết 4.1 K lượt xem 5 năm trước
50 bài toán hay và khó về hỗn hợp chứa peptit và este (P1)

X là tripeptit, Y là tetrapeptit và Z là hợp chất có CTPT là C4H9NO4 (đều mạch hở). Cho 0,19 mol hỗn hợp E chứa X, Y, Z tác dụng hoàn toàn với dung dịch chứa 0,56 mol NaOH (vừa đủ). Sau phản ứng thu được 0,08 mol ancol đơn chức; dung dịch T chứa 3 muối trong đó có muối của Ala và muối của một axit hữu cơ no, đơn chức, mạch hở với tổng khổi lượng là 54,1 gam. Phần trăm khối lượng của X trong E là:

Hóa học Lớp 12
Xem chi tiết 0.9 K lượt xem 5 năm trước
Tổng hợp đề thi thử mới nhất môn tiếng anh cực hay có lời giải (P7)

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 24 to 33.Since the world became industrialized, the number of animal species that have either become extinct or have neared extinction has increased. Bengal tigers, for instance, which once roamed the jungles in vast numbers, now number only about 2,300. By the year 2025, it is estimated that they will become extinct. What is alarming about the case of the Bengal tiger is that this extinction will have been caused almost entirely by poachers who, according to some sources, are not always interested in material gain but in personal gratification. This is an example of the callousness that is contributing to the problem of extinction. Animals such as the Bengal tiger, as well as other endangered species, are valuable parts of the world's ecosystem. International laws protecting these animals must be enacted to ensure their survival - and the survival of our planet.Countries around the world have begun to deal with the problem in various ways. Some countries, in an effort to circumvent the problem, have allocated large amounts of land to animal reserves. They then charge admission prices to help defray the costs of maintaining the parks, and they often must also depend on world organizations for support. This money enables them to invest in equipment and patrols to protect the animals. Another response to the increase in animal extinction is an international boycott of products made from endangered species. This has had some effect, but by itself it will not prevent animals from being hunted and killed. What does the word 'this' in line 6 refer to in the passage?

Tiếng Anh Tốt nghiệp THPT
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Danh pháp

Đimetylamin có công thức là 

Hóa học Lớp 12
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Bộ đề luyện thi THPTQG Hóa Học cực hay có lời giải chi tiết (Đề số 9)

Phân tử polime nào sau đây chỉ chứa 3 nguyên tố C, H, N trong phân tử?

Hóa học Tốt nghiệp THPT
Xem chi tiết 567 lượt xem 5 năm trước
Tổng hợp đề thi thử mới nhất môn tiếng anh cực hay có lời giải (P7)

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 24 to 33.Since the world became industrialized, the number of animal species that have either become extinct or have neared extinction has increased. Bengal tigers, for instance, which once roamed the jungles in vast numbers, now number only about 2,300. By the year 2025, it is estimated that they will become extinct. What is alarming about the case of the Bengal tiger is that this extinction will have been caused almost entirely by poachers who, according to some sources, are not always interested in material gain but in personal gratification. This is an example of the callousness that is contributing to the problem of extinction. Animals such as the Bengal tiger, as well as other endangered species, are valuable parts of the world's ecosystem. International laws protecting these animals must be enacted to ensure their survival - and the survival of our planet.Countries around the world have begun to deal with the problem in various ways. Some countries, in an effort to circumvent the problem, have allocated large amounts of land to animal reserves. They then charge admission prices to help defray the costs of maintaining the parks, and they often must also depend on world organizations for support. This money enables them to invest in equipment and patrols to protect the animals. Another response to the increase in animal extinction is an international boycott of products made from endangered species. This has had some effect, but by itself it will not prevent animals from being hunted and killed. The above passage is divided into two paragraphs in order to contrast

Tiếng Anh Tốt nghiệp THPT
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Danh pháp

Benzyl amin có công thức phân tử là 

Hóa học Lớp 12
Xem chi tiết 1.7 K lượt xem 5 năm trước
50 bài toán hay và khó về hỗn hợp chứa peptit và este (P1)

Hỗn hợp E chứa peptit X mạch hở (tạo bởi gly và ala) và este (thuần chức) mạch hở (tạo bởi etylenglicol và một axit đơn chức, không no chứa một liên kết C=C). Đun nóng m gam hỗn hợp E với dung dịch NaOH vừa đủ thu được 25,32 gam hỗn hợp muối F. Lấy toàn bộ F đem đốt cháy thu được Na2CO3, N2, 30,8 gam CO2, 10,44 gam H2O. Biết số mắt xích của X nhỏ hơn 8. Phần trăm khối lượng của este trong E gần nhất với?

Hóa học Lớp 12
Xem chi tiết 2.3 K lượt xem 4 năm trước
Tổng hợp đề thi thử mới nhất môn tiếng anh cực hay có lời giải (P7)

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 24 to 33.Since the world became industrialized, the number of animal species that have either become extinct or have neared extinction has increased. Bengal tigers, for instance, which once roamed the jungles in vast numbers, now number only about 2,300. By the year 2025, it is estimated that they will become extinct. What is alarming about the case of the Bengal tiger is that this extinction will have been caused almost entirely by poachers who, according to some sources, are not always interested in material gain but in personal gratification. This is an example of the callousness that is contributing to the problem of extinction. Animals such as the Bengal tiger, as well as other endangered species, are valuable parts of the world's ecosystem. International laws protecting these animals must be enacted to ensure their survival - and the survival of our planet.Countries around the world have begun to deal with the problem in various ways. Some countries, in an effort to circumvent the problem, have allocated large amounts of land to animal reserves. They then charge admission prices to help defray the costs of maintaining the parks, and they often must also depend on world organizations for support. This money enables them to invest in equipment and patrols to protect the animals. Another response to the increase in animal extinction is an international boycott of products made from endangered species. This has had some effect, but by itself it will not prevent animals from being hunted and killed. The word 'callousness' in line 6 could best be replaced by which of the following?

Tiếng Anh Tốt nghiệp THPT
Xem chi tiết 2 K lượt xem 5 năm trước
Danh pháp

Công thức cấu tạo thu gọn của etylamin là 

Hóa học Lớp 12
Xem chi tiết 4.5 K lượt xem 5 năm trước
Kỳ thi thử thpt quốc gia lần 1 năm 2019 môn Tiếng Anh cực hay có lời giải(Đề 3)

BÀI ĐỌC NGẮNĐọc đoạn văn và trả lời 10 câu hỏi kèm theo.Line  5  10    15    20The yêm is  an  ancient  common  upper-body  garment  for Vietnamese  girls  and  women  for thousands  of  years  until  after  World  War  II,  when  Western  dressing  style  entered  and  became popular.A yêm was a sexy simply-cut piece of usually simple cloth, which could be either outerwear or  undershirt.  As  Vietnam  has  a  tropical  climate  with  hot  and  humid  summers,  the  lighter  and airier the clothes are the better. The yêm was the solution in the old days for Vietnamese people to the environment. Colours and materials of the yêm reflected the woman’s age and social status. Older women tended to wear round-necked, and younger ones the v-neck style. The working-class women wore dark colours such as black, beige, or brown, and coarse cloth, while the elite opted for more festive, brighter tones such as red and pink or white, normally in dedicate cloth such as silk or satin.Throughout history, the design of the yêm stayed almost the same. However, there was much room for flexibility. When a woman was young, she tied the strings loosely to let the neck come lower, especially when she wore necklaces. When she got older, she pulled the strings tighter to raise the neck higher. This is a good example of the Vietnamese dressing style – simplicity but with a height of delicacy and sexiness.The yêm dates to the Hung Kings (2879 BC - 258 AD). Evidence can be found in the images of women in decoration on a Dong Xa bronze drum, cast over 2,000 years ago. It made its way down to around  1945 as a traditional costume exclusively of Vietnamese women. Photos of Vietnamese women in the 1940s still showed some of them wearing the yêm. From the mid-20th century, along with the decline  of the yêm to give way for Western dressing trends, many traditions disappeared, such as tying the hair around the head, or having the teeth dyed. Recently, the yêm is making a comeback, but only on the catwalk.The phrase “opted for” in line 10 is closest in meaning to______.

Tiếng Anh Tốt nghiệp THPT
Xem chi tiết 320 lượt xem 5 năm trước
Kỳ thi thử thpt quốc gia lần 1 năm 2019 môn Tiếng Anh cực hay có lời giải(Đề 3)

BÀI ĐỌC NGẮNĐọc đoạn văn và trả lời 10 câu hỏi kèm theo.Line  5  10    15    20The yêm is  an  ancient  common  upper-body  garment  for Vietnamese  girls  and  women  for thousands  of  years  until  after  World  War  II,  when  Western  dressing  style  entered  and  became popular.A yêm was a sexy simply-cut piece of usually simple cloth, which could be either outerwear or  undershirt.  As  Vietnam  has  a  tropical  climate  with  hot  and  humid  summers,  the  lighter  and airier the clothes are the better. The yêm was the solution in the old days for Vietnamese people to the environment. Colours and materials of the yêm reflected the woman’s age and social status. Older women tended to wear round-necked, and younger ones the v-neck style. The working-class women wore dark colours such as black, beige, or brown, and coarse cloth, while the elite opted for more festive, brighter tones such as red and pink or white, normally in dedicate cloth such as silk or satin.Throughout history, the design of the yêm stayed almost the same. However, there was much room for flexibility. When a woman was young, she tied the strings loosely to let the neck come lower, especially when she wore necklaces. When she got older, she pulled the strings tighter to raise the neck higher. This is a good example of the Vietnamese dressing style – simplicity but with a height of delicacy and sexiness.The yêm dates to the Hung Kings (2879 BC - 258 AD). Evidence can be found in the images of women in decoration on a Dong Xa bronze drum, cast over 2,000 years ago. It made its way down to around  1945 as a traditional costume exclusively of Vietnamese women. Photos of Vietnamese women in the 1940s still showed some of them wearing the yêm. From the mid-20th century, along with the decline  of the yêm to give way for Western dressing trends, many traditions disappeared, such as tying the hair around the head, or having the teeth dyed. Recently, the yêm is making a comeback, but only on the catwalk.The phrase “opted for” in line 10 is closest in meaning to______.

Tiếng Anh Tốt nghiệp THPT
Xem chi tiết 395 lượt xem 5 năm trước
Tổng hợp đề thi thử mới nhất môn tiếng anh cực hay có lời giải (P7)

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 24 to 33.Since the world became industrialized, the number of animal species that have either become extinct or have neared extinction has increased. Bengal tigers, for instance, which once roamed the jungles in vast numbers, now number only about 2,300. By the year 2025, it is estimated that they will become extinct. What is alarming about the case of the Bengal tiger is that this extinction will have been caused almost entirely by poachers who, according to some sources, are not always interested in material gain but in personal gratification. This is an example of the callousness that is contributing to the problem of extinction. Animals such as the Bengal tiger, as well as other endangered species, are valuable parts of the world's ecosystem. International laws protecting these animals must be enacted to ensure their survival - and the survival of our planet.Countries around the world have begun to deal with the problem in various ways. Some countries, in an effort to circumvent the problem, have allocated large amounts of land to animal reserves. They then charge admission prices to help defray the costs of maintaining the parks, and they often must also depend on world organizations for support. This money enables them to invest in equipment and patrols to protect the animals. Another response to the increase in animal extinction is an international boycott of products made from endangered species. This has had some effect, but by itself it will not prevent animals from being hunted and killed. The word 'poachers' as used in line 5 could be best replaced by which of the following?

Tiếng Anh Tốt nghiệp THPT
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Danh pháp

Amin bậc III có tên là 

Hóa học Lớp 12
Xem chi tiết 6.9 K lượt xem 5 năm trước
Kỳ thi thử thpt quốc gia lần 1 năm 2019 môn Tiếng Anh cực hay có lời giải(Đề 3)

BÀI ĐỌC NGẮNĐọc đoạn văn và trả lời 10 câu hỏi kèm theo.Line  5  10    15    20The yêm is  an  ancient  common  upper-body  garment  for Vietnamese  girls  and  women  for thousands  of  years  until  after  World  War  II,  when  Western  dressing  style  entered  and  became popular.A yêm was a sexy simply-cut piece of usually simple cloth, which could be either outerwear or  undershirt.  As  Vietnam  has  a  tropical  climate  with  hot  and  humid  summers,  the  lighter  and airier the clothes are the better. The yêm was the solution in the old days for Vietnamese people to the environment. Colours and materials of the yêm reflected the woman’s age and social status. Older women tended to wear round-necked, and younger ones the v-neck style. The working-class women wore dark colours such as black, beige, or brown, and coarse cloth, while the elite opted for more festive, brighter tones such as red and pink or white, normally in dedicate cloth such as silk or satin.Throughout history, the design of the yêm stayed almost the same. However, there was much room for flexibility. When a woman was young, she tied the strings loosely to let the neck come lower, especially when she wore necklaces. When she got older, she pulled the strings tighter to raise the neck higher. This is a good example of the Vietnamese dressing style – simplicity but with a height of delicacy and sexiness.The yêm dates to the Hung Kings (2879 BC - 258 AD). Evidence can be found in the images of women in decoration on a Dong Xa bronze drum, cast over 2,000 years ago. It made its way down to around  1945 as a traditional costume exclusively of Vietnamese women. Photos of Vietnamese women in the 1940s still showed some of them wearing the yêm. From the mid-20th century, along with the decline  of the yêm to give way for Western dressing trends, many traditions disappeared, such as tying the hair around the head, or having the teeth dyed. Recently, the yêm is making a comeback, but only on the catwalk.What was the material of working-class women’s yêm?

Tiếng Anh Tốt nghiệp THPT
Xem chi tiết 546 lượt xem 5 năm trước
Tổng hợp đề thi thử mới nhất môn tiếng anh cực hay có lời giải (P7)

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 24 to 33.Since the world became industrialized, the number of animal species that have either become extinct or have neared extinction has increased. Bengal tigers, for instance, which once roamed the jungles in vast numbers, now number only about 2,300. By the year 2025, it is estimated that they will become extinct. What is alarming about the case of the Bengal tiger is that this extinction will have been caused almost entirely by poachers who, according to some sources, are not always interested in material gain but in personal gratification. This is an example of the callousness that is contributing to the problem of extinction. Animals such as the Bengal tiger, as well as other endangered species, are valuable parts of the world's ecosystem. International laws protecting these animals must be enacted to ensure their survival - and the survival of our planet.Countries around the world have begun to deal with the problem in various ways. Some countries, in an effort to circumvent the problem, have allocated large amounts of land to animal reserves. They then charge admission prices to help defray the costs of maintaining the parks, and they often must also depend on world organizations for support. This money enables them to invest in equipment and patrols to protect the animals. Another response to the increase in animal extinction is an international boycott of products made from endangered species. This has had some effect, but by itself it will not prevent animals from being hunted and killed. Which of the following could best replace the word 'case' as used in line 4?

Tiếng Anh Tốt nghiệp THPT
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Danh pháp

Cho các amin công thức cấu tạo như sau:(3) CH3 - CH2 - CH2 - NH2 (4) CH3 - CH2 - NH - CH3Isopropylamin là danh pháp gốc chức của amin nào?

Hóa học Lớp 12
Xem chi tiết 40.5 K lượt xem 5 năm trước
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