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Tuyển tập đề thi thử Tiếng Anh cực hay có lời giải (Đề số 15)

Read the following passage and mark the letter A, B, C or D to indicate the correct answer to each of the questions from 36 to 42. Diversity is a hallmark of life, an intrinsic feature of living systems in the natural world. The demonstration and celebration of this diversity is an endless rite. Look at the popularity of museums, zoos, aquariums and botanic gardens. The odder the exhibit, the more different it is from the most common and familiar life forms around us, the more successful it is likely to be. Nature does not tire of providing oddities for people who look for them. Biologists have already formally classified 1.7 million species. As many as 30 to 40 million more may remain to be classified. (1) Most people seem to take diversity for granted. If they think about it at all they assume it exists in endless supply. Nevertheless, diversity is endangered as never before in its history. Advocates of perpetual economic growth treat living species as expendable. As a result an extinction crisis of unprecedented magnitude is under way. Worse yet, when diversity needs help most, it is neglected and misunderstood by much of the scientific community that once championed it. (2) Of the two great challenges to the legitimacy of this diversity, the familiar one comes primarily from economists. Their argument, associated with such names as Julian Simon, Malcolm McPherson and the late Herman Kahn, can be paraphrased: "First, if endangered species have a value as resources - which has been greatly exaggerated - then we should be able to quantify that value so that we can make unbiased, objective decisions about which species, if any, we should bother to save, and how much the effort is worth. Secondly, the global threat to the diversity of species, particularly in the tropics, has been overestimated. Thirdly, we have good substitutes for the species and ecosystems that are being lost, and these substitutes will nullify the damage caused by the extinctions". (3) The structure of the argument seems to me to be identical in form to that of an old joke from the American vaudeville circuit. One elderly lady complained to another about her recent vacation at a resort in the Catskill Mountains in New York State. "The food was terrible", she moaned. "Pure poison, I couldn't eat a bite. And the portions were so tiny!" (4) Species may be valuable, but not especially so, and the threat to them has been exaggerated. But this does not matter anyway, say the economists, because we can replace any species that vanishes.(5) It is not clear how much of an impact this argument has on the informed public, but it has certainly provoked an outcry among scientific conservationists. It has set the terms for, and dominated, most of the pro-diversity literature of the past few years, making it a literature of response, thus limiting its scope and creative force. Question 42: The position of the scientific conservationists has been weakened because they have _________.

Tiếng Anh Tốt nghiệp THPT

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Bài 37. Phân loại và số liệu kỹ thuật của đồ dùng điện

Em hãy nêu tên và các công dụng của các đồ dùng điện gia đình trên hình 37.1

Công nghệ Lớp 8

Xem chi tiết 7.2 K lượt xem 2 năm trước

Đề thi thử THPTQG năm 2019 chuẩn cấu trúc của bộ giáo dục có đáp án (Đề số 9)

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. Glass is a remarkable substance made from the simplest raw materials. It can be colored or colorless, monochrome or polychrome, transparent, translucent, or opaque. It is lightweight impermeable to liquids, readily cleaned and reused, durable yet fragile, and often very beautiful. Glass can be decorated in multiple ways and its optical properties are exceptional. In all its myriad forms - as table ware, containers, in architecture and design - glass represents a major achievement in the history of technological developments. Since the Bronze Age about 3, 000 B.C., glass has been used for making various kinds of objects. It was first made from a mixture of silica, line and an alkali such as soda or potash, and these remained the basic ingredients of glass until the development of lead glass in the seventeenth century. When heated, the mixture becomes soft and malleable and can be formed by various techniques into a vast array of shapes and sizes. The homogeneous mass thus formed by melting then cools to create glass, but in contrast to most materials formed in this way (metals, for instance), glass lacks the crystalline structure normally associated with solids, and instead retains the random molecular structure of a liquid. In effect, as molten glass cools, it progressively stiffens until rigid, but does so without setting up a network of interlocking crystals customarilyassociated with that process. This is why glass shatters so easily when dealt a blow. Why glass deteriorates over time, especially when exposed to moisture, and why glassware must be slowly reheated and uniformly cooled after manufacture to release internal stresses induced by uneven cooling. Another unusual feature of glass is the manner in which its viscosity changes as it turns from a cold substance into a hot, ductile liquid. Unlike metals that flow or freeze at specific temperatures glass progressively softens as the temperature rises, going through varying stages of malleability until it flows like thick syrup. Each stage of malleability allows the glass to be manipulated into various forms, by different techniques, and if suddenly cooled the object retains the shape achieved at that point. Glass is thus amenable to a greater number of heat-forming techniques than most other materials. The words “exposed to” in paragraph 2 most likely mean________.

Tiếng Anh Tốt nghiệp THPT

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Một số kiểu bài tập đặc biệt

Hòa tan hết 27,2 gam hỗn hợp rắn X gồm Fe3O4, Fe2O3 và Cu trong dung dịch chứa 0,9 mol HCl (dùng dư), thu được dung dịch Y chứa 13 gam FeCl3. Tiến hành điện phân dung dịch Y bằng điện cực trơ đến khi catot bắt đầu có khí thoát ra thì dừng điện phân, thấy khối lượng dung dịch giảm 13,64 gam. Cho dung dịch AgNO3 dư vào dung dịch sau điện phân, kết thúc phản ứng thấy có khí NO thoát ra (sản phẩm khử duy nhất) ; đồng thời thu được m gam kết tủa. Giá trị của m là :

Hóa học Lớp 11

Xem chi tiết 383 lượt xem 6 năm trước

30 đề thi thử đề thi thử THPTQG môn Tiếng Anh có lời giải chi tiết (Đề số 10)

*Mark the letter A, B, C, or I) on your answer sheet to indicate the wordfs) OPPOSITE in meaning to the underlined word(s) in each of the following questions.Feel free to bring along your significant other to the party.

Tiếng Anh Tốt nghiệp THPT

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Đề thi thử THPTQG năm 2019 chuẩn cấu trúc của bộ giáo dục có đáp án (Đề số 9)

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. Glass is a remarkable substance made from the simplest raw materials. It can be colored or colorless, monochrome or polychrome, transparent, translucent, or opaque. It is lightweight impermeable to liquids, readily cleaned and reused, durable yet fragile, and often very beautiful. Glass can be decorated in multiple ways and its optical properties are exceptional. In all its myriad forms - as table ware, containers, in architecture and design - glass represents a major achievement in the history of technological developments. Since the Bronze Age about 3, 000 B.C., glass has been used for making various kinds of objects. It was first made from a mixture of silica, line and an alkali such as soda or potash, and these remained the basic ingredients of glass until the development of lead glass in the seventeenth century. When heated, the mixture becomes soft and malleable and can be formed by various techniques into a vast array of shapes and sizes. The homogeneous mass thus formed by melting then cools to create glass, but in contrast to most materials formed in this way (metals, for instance), glass lacks the crystalline structure normally associated with solids, and instead retains the random molecular structure of a liquid. In effect, as molten glass cools, it progressively stiffens until rigid, but does so without setting up a network of interlocking crystals customarilyassociated with that process. This is why glass shatters so easily when dealt a blow. Why glass deteriorates over time, especially when exposed to moisture, and why glassware must be slowly reheated and uniformly cooled after manufacture to release internal stresses induced by uneven cooling. Another unusual feature of glass is the manner in which its viscosity changes as it turns from a cold substance into a hot, ductile liquid. Unlike metals that flow or freeze at specific temperatures glass progressively softens as the temperature rises, going through varying stages of malleability until it flows like thick syrup. Each stage of malleability allows the glass to be manipulated into various forms, by different techniques, and if suddenly cooled the object retains the shape achieved at that point. Glass is thus amenable to a greater number of heat-forming techniques than most other materials. According to the passage, how is glass that has cooled and become rigid different from most other rigid substances?

Tiếng Anh Tốt nghiệp THPT

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ĐỀ LUYỆN TỔNG HỢP (P5)

Hiđrocacbon X mạch hở, có phân tử khối bằng 52, phản ứng với dung dịch AgNO3 trong NH3 tạo ra kết tủa. Nhận xét nào sau đây không đúng ?

Hóa học Tốt nghiệp THPT

Xem chi tiết 2.6 K lượt xem 6 năm trước

Bài 36. Vật liệu kỹ thuật điện

Vì sao thép kĩ thuật điện được dùng để chế tạo các lõi dẫn từ của các thiết bị điện

Công nghệ Lớp 8

Xem chi tiết 17.5 K lượt xem 2 năm trước

Tuyển tập đề thi thử Tiếng Anh cực hay có lời giải (Đề số 15)

Read the following passage and mark the letter A, B, C or D to indicate the correct answer to each of the questions from 36 to 42. Diversity is a hallmark of life, an intrinsic feature of living systems in the natural world. The demonstration and celebration of this diversity is an endless rite. Look at the popularity of museums, zoos, aquariums and botanic gardens. The odder the exhibit, the more different it is from the most common and familiar life forms around us, the more successful it is likely to be. Nature does not tire of providing oddities for people who look for them. Biologists have already formally classified 1.7 million species. As many as 30 to 40 million more may remain to be classified. (1) Most people seem to take diversity for granted. If they think about it at all they assume it exists in endless supply. Nevertheless, diversity is endangered as never before in its history. Advocates of perpetual economic growth treat living species as expendable. As a result an extinction crisis of unprecedented magnitude is under way. Worse yet, when diversity needs help most, it is neglected and misunderstood by much of the scientific community that once championed it. (2) Of the two great challenges to the legitimacy of this diversity, the familiar one comes primarily from economists. Their argument, associated with such names as Julian Simon, Malcolm McPherson and the late Herman Kahn, can be paraphrased: "First, if endangered species have a value as resources - which has been greatly exaggerated - then we should be able to quantify that value so that we can make unbiased, objective decisions about which species, if any, we should bother to save, and how much the effort is worth. Secondly, the global threat to the diversity of species, particularly in the tropics, has been overestimated. Thirdly, we have good substitutes for the species and ecosystems that are being lost, and these substitutes will nullify the damage caused by the extinctions". (3) The structure of the argument seems to me to be identical in form to that of an old joke from the American vaudeville circuit. One elderly lady complained to another about her recent vacation at a resort in the Catskill Mountains in New York State. "The food was terrible", she moaned. "Pure poison, I couldn't eat a bite. And the portions were so tiny!" (4) Species may be valuable, but not especially so, and the threat to them has been exaggerated. But this does not matter anyway, say the economists, because we can replace any species that vanishes.(5) It is not clear how much of an impact this argument has on the informed public, but it has certainly provoked an outcry among scientific conservationists. It has set the terms for, and dominated, most of the pro-diversity literature of the past few years, making it a literature of response, thus limiting its scope and creative force. Question 41: What point is the writer trying to make about the economists' arguments by including the joke in paragraph 4?

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 10)

* Mark the letter A, B, C, or D on your answer sheet to indicate the word(s) CLOSEST in meaning to the underlined word(s) in each of the following question. More complex animals gradually evolved from these very simple creatures.

Tiếng Anh Tốt nghiệp THPT

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Bài 36. Vật liệu kỹ thuật điện

Hãy kể tên những bộ phận làm bằng vật liệu dẫn điện trong các đồ dùng điện mà em biết. Chúng làm bằng vật liệu dẫn điện gì?

Công nghệ Lớp 8

Xem chi tiết 7.6 K lượt xem 2 năm trước

ĐỀ LUYỆN TỔNG HỢP (P5)

Polime được điều chế bằng phản ứng trùng hợp là:

Hóa học Tốt nghiệp THPT

Xem chi tiết 353 lượt xem 6 năm trước

Một số kiểu bài tập đặc biệt

Điện phân dung dịch X chứa CuSO4 và NaCl (có tỷ lệ mol tương ứng là 1:3) với điện cực trơ, màng ngăn xốp bằng dòng điện một chiều có cường độ 1,34A, sau thời gian t giờ thu được dung dịch Y chứa hai chất tan và thấy khối lượng dung dịch Y giảm 10,375 gam so với khối lượng dung dịch X. Cho bột nhôm dư vào dung dịch Y, sau khi các phản ứng xảy ra hoàn toàn thu được 1,68 lít khí H2 (đktc). Giả sử khí sinh ra trong quá trình điện phân thoát ra hết khỏi dung dịch. Giá trị của t gần nhất với giá trị nào sau đây ?

Hóa học Lớp 11

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Bài 36. Vật liệu kỹ thuật điện

Em hãy điền vào chỗ trống (…) trong bảng 36.1 đặc tính và các phần tử của thiết bị điện được chế tạo từ các vật liệu kĩ thuật điện

Công nghệ Lớp 8

Xem chi tiết 4 K lượt xem 2 năm trước

230 Bài tập thí nghiệm Hóa Học cực hay có đáp án(Đề số 1)

Thực hiện các thí nghiệm sau: (1) Cho dung dịch HCl dư vào ống nghiệm chứa dung dịch NaAlO2. (2) Dẫn khí CO2 dư vào ống nghiệm chứa dung dịch NaAlO2. (3) Cho dung dịch Ba(OH)2 dư vào ống nghiệm chứa dung dịch Al2(SO4)3. (4) Cho dung dịch NH3 dư vào ống nghiệm chứa dung dịch Al2(SO4)3. (5) Cho dung dịch AgNO3 vào ống nghiệm chứa dung dịch HCl. (6) Cho nước cứng vĩnh cửu tác dụng với dung dịch Na3PO4. Sau khi các phản ứng xảy ra hoàn toàn, số thí nghiệm thu được kết tủa là

Hóa học Tốt nghiệp THPT

Xem chi tiết 1.5 K lượt xem 6 năm trước

ĐỀ LUYỆN TỔNG HỢP (P5)

Hợp chất nào sau đây thuộc loại tripeptit ?

Hóa học Tốt nghiệp THPT

Xem chi tiết 2.3 K lượt xem 6 năm trước

Tuyển tập đề thi thử Tiếng Anh cực hay có lời giải (Đề số 15)

Read the following passage and mark the letter A, B, C or D to indicate the correct answer to each of the questions from 36 to 42. Diversity is a hallmark of life, an intrinsic feature of living systems in the natural world. The demonstration and celebration of this diversity is an endless rite. Look at the popularity of museums, zoos, aquariums and botanic gardens. The odder the exhibit, the more different it is from the most common and familiar life forms around us, the more successful it is likely to be. Nature does not tire of providing oddities for people who look for them. Biologists have already formally classified 1.7 million species. As many as 30 to 40 million more may remain to be classified. (1) Most people seem to take diversity for granted. If they think about it at all they assume it exists in endless supply. Nevertheless, diversity is endangered as never before in its history. Advocates of perpetual economic growth treat living species as expendable. As a result an extinction crisis of unprecedented magnitude is under way. Worse yet, when diversity needs help most, it is neglected and misunderstood by much of the scientific community that once championed it. (2) Of the two great challenges to the legitimacy of this diversity, the familiar one comes primarily from economists. Their argument, associated with such names as Julian Simon, Malcolm McPherson and the late Herman Kahn, can be paraphrased: "First, if endangered species have a value as resources - which has been greatly exaggerated - then we should be able to quantify that value so that we can make unbiased, objective decisions about which species, if any, we should bother to save, and how much the effort is worth. Secondly, the global threat to the diversity of species, particularly in the tropics, has been overestimated. Thirdly, we have good substitutes for the species and ecosystems that are being lost, and these substitutes will nullify the damage caused by the extinctions". (3) The structure of the argument seems to me to be identical in form to that of an old joke from the American vaudeville circuit. One elderly lady complained to another about her recent vacation at a resort in the Catskill Mountains in New York State. "The food was terrible", she moaned. "Pure poison, I couldn't eat a bite. And the portions were so tiny!" (4) Species may be valuable, but not especially so, and the threat to them has been exaggerated. But this does not matter anyway, say the economists, because we can replace any species that vanishes.(5) It is not clear how much of an impact this argument has on the informed public, but it has certainly provoked an outcry among scientific conservationists. It has set the terms for, and dominated, most of the pro-diversity literature of the past few years, making it a literature of response, thus limiting its scope and creative force. Question 40: Which statement represents the views of economists?

Tiếng Anh Tốt nghiệp THPT

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230 Bài tập thí nghiệm Hóa Học cực hay có đáp án(Đề số 1)

Cho hình vẽ bên mô tả thiết bị chưng cất thường. Vai trò của nhiệt kế trong khi chưng cất là

Hóa học Tốt nghiệp THPT

Xem chi tiết 835 lượt xem 6 năm trước

Bài 36. Vật liệu kỹ thuật điện

Phần tử cách điện có công dụng gì? Em hãy nêu tên một vài phần tử cách điện trong đồ dùng gia đình

Công nghệ Lớp 8

Xem chi tiết 7.3 K lượt xem 2 năm trước

Một số kiểu bài tập đặc biệt

Tiến hành điện phân dung dịch chứa Cu(NO3)2 1,2M và KCl 0,4M bằng điện cực trơ, màng ngăn xốp, cường độ dòng điện bằng 5A không đổi trong thời gian 6176 giây thì dừng điện phân, thấy khối lượng dung dịch giảm 15 gam. Cho 0,25 mol bột Fe vào dung dịch sau điện phân, kết thúc phản ứng thấy có khí NO thoát ra (sản phẩm khử duy nhất của N+5); đồng thời thu được m gam gỗn hợp rắn. Giá trị của m là:

Hóa học Lớp 11

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Đề thi thử THPTQG năm 2019 chuẩn cấu trúc của bộ giáo dục có đáp án (Đề số 9)

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. Glass is a remarkable substance made from the simplest raw materials. It can be colored or colorless, monochrome or polychrome, transparent, translucent, or opaque. It is lightweight impermeable to liquids, readily cleaned and reused, durable yet fragile, and often very beautiful. Glass can be decorated in multiple ways and its optical properties are exceptional. In all its myriad forms - as table ware, containers, in architecture and design - glass represents a major achievement in the history of technological developments. Since the Bronze Age about 3, 000 B.C., glass has been used for making various kinds of objects. It was first made from a mixture of silica, line and an alkali such as soda or potash, and these remained the basic ingredients of glass until the development of lead glass in the seventeenth century. When heated, the mixture becomes soft and malleable and can be formed by various techniques into a vast array of shapes and sizes. The homogeneous mass thus formed by melting then cools to create glass, but in contrast to most materials formed in this way (metals, for instance), glass lacks the crystalline structure normally associated with solids, and instead retains the random molecular structure of a liquid. In effect, as molten glass cools, it progressively stiffens until rigid, but does so without setting up a network of interlocking crystals customarilyassociated with that process. This is why glass shatters so easily when dealt a blow. Why glass deteriorates over time, especially when exposed to moisture, and why glassware must be slowly reheated and uniformly cooled after manufacture to release internal stresses induced by uneven cooling. Another unusual feature of glass is the manner in which its viscosity changes as it turns from a cold substance into a hot, ductile liquid. Unlike metals that flow or freeze at specific temperatures glass progressively softens as the temperature rises, going through varying stages of malleability until it flows like thick syrup. Each stage of malleability allows the glass to be manipulated into various forms, by different techniques, and if suddenly cooled the object retains the shape achieved at that point. Glass is thus amenable to a greater number of heat-forming techniques than most other materials. What does the author imply about the raw materials used to make glass?

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 10)

* Mark the letter A, B, C, or D on your answer sheet to indicate the word(s) CLOSEST in meaning to the underlined word(s) in each of the following question. This is the third successive time the firm receives this award.

Tiếng Anh Tốt nghiệp THPT

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Bài 36. Vật liệu kỹ thuật điện

Quan sát hình 36.1 em hãy nêu tên các phần tử dẫn điện

Công nghệ Lớp 8

Xem chi tiết 5 K lượt xem 2 năm trước

ĐỀ LUYỆN TỔNG HỢP (P5)

Hợp chất X có công thức phân tử C5H10O, có khả năng phản ứng với Na, khi tách nước tạo được nhiều anken nhất. Tên gọi của X là:

Hóa học Tốt nghiệp THPT

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Đề thi thử THPTQG năm 2019 chuẩn cấu trúc của bộ giáo dục có đáp án (Đề số 9)

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. Glass is a remarkable substance made from the simplest raw materials. It can be colored or colorless, monochrome or polychrome, transparent, translucent, or opaque. It is lightweight impermeable to liquids, readily cleaned and reused, durable yet fragile, and often very beautiful. Glass can be decorated in multiple ways and its optical properties are exceptional. In all its myriad forms - as table ware, containers, in architecture and design - glass represents a major achievement in the history of technological developments. Since the Bronze Age about 3, 000 B.C., glass has been used for making various kinds of objects. It was first made from a mixture of silica, line and an alkali such as soda or potash, and these remained the basic ingredients of glass until the development of lead glass in the seventeenth century. When heated, the mixture becomes soft and malleable and can be formed by various techniques into a vast array of shapes and sizes. The homogeneous mass thus formed by melting then cools to create glass, but in contrast to most materials formed in this way (metals, for instance), glass lacks the crystalline structure normally associated with solids, and instead retains the random molecular structure of a liquid. In effect, as molten glass cools, it progressively stiffens until rigid, but does so without setting up a network of interlocking crystals customarilyassociated with that process. This is why glass shatters so easily when dealt a blow. Why glass deteriorates over time, especially when exposed to moisture, and why glassware must be slowly reheated and uniformly cooled after manufacture to release internal stresses induced by uneven cooling. Another unusual feature of glass is the manner in which its viscosity changes as it turns from a cold substance into a hot, ductile liquid. Unlike metals that flow or freeze at specific temperatures glass progressively softens as the temperature rises, going through varying stages of malleability until it flows like thick syrup. Each stage of malleability allows the glass to be manipulated into various forms, by different techniques, and if suddenly cooled the object retains the shape achieved at that point. Glass is thus amenable to a greater number of heat-forming techniques than most other materials. Why does the author list the characteristics of glass in paragraph 1?

Tiếng Anh Tốt nghiệp THPT

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230 Bài tập thí nghiệm Hóa Học cực hay có đáp án(Đề số 1)

Trong thí nghiệm nào sau đây xảy ra ăn mòn điện hóa?

Hóa học Tốt nghiệp THPT

Xem chi tiết 674 lượt xem 6 năm trước

Một số kiểu bài tập đặc biệt

Điện phân dung dich X chứa m gam chất tan gồm FeCl3 và CuCl2 với điện cực trơ, màng ngăn xốp, cường độ đòng diện 5,36A trong 14763 giây thu được dung dịch Y và ở catot có 19,84 gam hỗn hợp kim loại bám vào. Cho dung dịch Y tác dụng với dung dịch AgNO3 dư, sau phản ứng thu được 39,5 gam kết tủa. Giá trị của m là:

Hóa học Lớp 11

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Bài 35. Thực hành: Cứu người bị tai nạn điện

Hãy đặt ra một tình huống cứu người bị tai nạn điện

Công nghệ Lớp 8

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Tuyển tập đề thi thử Tiếng Anh cực hay có lời giải (Đề số 15)

Read the following passage and mark the letter A, B, C or D to indicate the correct answer to each of the questions from 36 to 42. Diversity is a hallmark of life, an intrinsic feature of living systems in the natural world. The demonstration and celebration of this diversity is an endless rite. Look at the popularity of museums, zoos, aquariums and botanic gardens. The odder the exhibit, the more different it is from the most common and familiar life forms around us, the more successful it is likely to be. Nature does not tire of providing oddities for people who look for them. Biologists have already formally classified 1.7 million species. As many as 30 to 40 million more may remain to be classified. (1) Most people seem to take diversity for granted. If they think about it at all they assume it exists in endless supply. Nevertheless, diversity is endangered as never before in its history. Advocates of perpetual economic growth treat living species as expendable. As a result an extinction crisis of unprecedented magnitude is under way. Worse yet, when diversity needs help most, it is neglected and misunderstood by much of the scientific community that once championed it. (2) Of the two great challenges to the legitimacy of this diversity, the familiar one comes primarily from economists. Their argument, associated with such names as Julian Simon, Malcolm McPherson and the late Herman Kahn, can be paraphrased: "First, if endangered species have a value as resources - which has been greatly exaggerated - then we should be able to quantify that value so that we can make unbiased, objective decisions about which species, if any, we should bother to save, and how much the effort is worth. Secondly, the global threat to the diversity of species, particularly in the tropics, has been overestimated. Thirdly, we have good substitutes for the species and ecosystems that are being lost, and these substitutes will nullify the damage caused by the extinctions". (3) The structure of the argument seems to me to be identical in form to that of an old joke from the American vaudeville circuit. One elderly lady complained to another about her recent vacation at a resort in the Catskill Mountains in New York State. "The food was terrible", she moaned. "Pure poison, I couldn't eat a bite. And the portions were so tiny!" (4) Species may be valuable, but not especially so, and the threat to them has been exaggerated. But this does not matter anyway, say the economists, because we can replace any species that vanishes.(5) It is not clear how much of an impact this argument has on the informed public, but it has certainly provoked an outcry among scientific conservationists. It has set the terms for, and dominated, most of the pro-diversity literature of the past few years, making it a literature of response, thus limiting its scope and creative force. Question 39: Which adjective best describes the writer's attitude towards the community?

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Bài 35. Thực hành: Cứu người bị tai nạn điện

Trong trường hợp này, em và các bạn phải xử lý như thế nào? Em hãy chọn một trong những cách xử lý sau cho an toàn nhất

Công nghệ Lớp 8

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ĐỀ LUYỆN TỔNG HỢP (P5)

Hiđrocacbon nào dưới đây không làm mất màu dung dịch brom ở nhiệt độ thường ?

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Đề thi thử THPTQG năm 2019 chuẩn cấu trúc của bộ giáo dục có đáp án (Đề số 9)

Read the following passage and mark the letter A, B, c, or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks. NEIGHBOURS INFLUENCE BUYING DECISIONS However objective we believe ourselves to be, most of us do not judge a product solely on its merits, considering quality, value and style before making a decision. (34)__, we are easily influenced by the people around US. There is nothing wrong with this. It is probably a smarter way to make decisions than (35)on only our own opinions. But it does make life hard for companies. They have long understood that groups of friends and relatives tend to buy the same products, but understanding the reasons has been tricky. It is because they are so similar with (36)_to how much money they make and what television ads they watch that they independently arrive at the same decision? Or do they copy one another, perhaps (37)_envy or perhaps because they have shared information about the products? Research in Finland recently found overwhelming evidence that neighbours have a big influence on buying decisions. When one of a person’s ten nearest neighbours bought a car, the chances (38)_____ that person would buy a car of the same brand during the next week and a half rose by 86 per cent. The researchers argued that it was not just a matter of envy.Used cars seemed to attract neighbours even more than new cars. This suggested that people were not trying to keep up with their neighbours, they were keen to learn from them. Since used cars are less reliable, a recommendation of one can strongly influence a buying decision. Điền vào ô trống 38

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230 Bài tập thí nghiệm Hóa Học cực hay có đáp án(Đề số 1)

X, Y, Z, M là các kim loại. Thực hiện các thí nghiệm sau: Chiều tăng dần tính khử của các kim loại X, Y, Z, M là

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ĐỀ LUYỆN TỔNG HỢP (P5)

Phát biểu nào sau đây không đúng ?

Hóa học Tốt nghiệp THPT

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Tuyển tập đề thi thử Tiếng Anh cực hay có lời giải (Đề số 15)

Read the following passage and mark the letter A, B, C or D to indicate the correct answer to each of the questions from 36 to 42. Diversity is a hallmark of life, an intrinsic feature of living systems in the natural world. The demonstration and celebration of this diversity is an endless rite. Look at the popularity of museums, zoos, aquariums and botanic gardens. The odder the exhibit, the more different it is from the most common and familiar life forms around us, the more successful it is likely to be. Nature does not tire of providing oddities for people who look for them. Biologists have already formally classified 1.7 million species. As many as 30 to 40 million more may remain to be classified. (1) Most people seem to take diversity for granted. If they think about it at all they assume it exists in endless supply. Nevertheless, diversity is endangered as never before in its history. Advocates of perpetual economic growth treat living species as expendable. As a result an extinction crisis of unprecedented magnitude is under way. Worse yet, when diversity needs help most, it is neglected and misunderstood by much of the scientific community that once championed it. (2) Of the two great challenges to the legitimacy of this diversity, the familiar one comes primarily from economists. Their argument, associated with such names as Julian Simon, Malcolm McPherson and the late Herman Kahn, can be paraphrased: "First, if endangered species have a value as resources - which has been greatly exaggerated - then we should be able to quantify that value so that we can make unbiased, objective decisions about which species, if any, we should bother to save, and how much the effort is worth. Secondly, the global threat to the diversity of species, particularly in the tropics, has been overestimated. Thirdly, we have good substitutes for the species and ecosystems that are being lost, and these substitutes will nullify the damage caused by the extinctions". (3) The structure of the argument seems to me to be identical in form to that of an old joke from the American vaudeville circuit. One elderly lady complained to another about her recent vacation at a resort in the Catskill Mountains in New York State. "The food was terrible", she moaned. "Pure poison, I couldn't eat a bite. And the portions were so tiny!" (4) Species may be valuable, but not especially so, and the threat to them has been exaggerated. But this does not matter anyway, say the economists, because we can replace any species that vanishes.(5) It is not clear how much of an impact this argument has on the informed public, but it has certainly provoked an outcry among scientific conservationists. It has set the terms for, and dominated, most of the pro-diversity literature of the past few years, making it a literature of response, thus limiting its scope and creative force. Question 38: Which does the author mean by saying "Most people seem to take diversity for granted"?

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Bài 35. Thực hành: Cứu người bị tai nạn điện

Quan sát hình 35.1. Em hãy chọn cách xử lý đúng trong tình huống sau:

Công nghệ Lớp 8

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Đề thi thử THPTQG năm 2019 chuẩn cấu trúc của bộ giáo dục có đáp án (Đề số 9)

Read the following passage and mark the letter A, B, c, or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks. NEIGHBOURS INFLUENCE BUYING DECISIONS However objective we believe ourselves to be, most of us do not judge a product solely on its merits, considering quality, value and style before making a decision. (34)__, we are easily influenced by the people around US. There is nothing wrong with this. It is probably a smarter way to make decisions than (35)on only our own opinions. But it does make life hard for companies. They have long understood that groups of friends and relatives tend to buy the same products, but understanding the reasons has been tricky. It is because they are so similar with (36)_to how much money they make and what television ads they watch that they independently arrive at the same decision? Or do they copy one another, perhaps (37)_envy or perhaps because they have shared information about the products? Research in Finland recently found overwhelming evidence that neighbours have a big influence on buying decisions. When one of a person’s ten nearest neighbours bought a car, the chances (38)_____ that person would buy a car of the same brand during the next week and a half rose by 86 per cent. The researchers argued that it was not just a matter of envy.Used cars seemed to attract neighbours even more than new cars. This suggested that people were not trying to keep up with their neighbours, they were keen to learn from them. Since used cars are less reliable, a recommendation of one can strongly influence a buying decision. Điền vào ô trống 37

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Một số kiểu bài tập đặc biệt

Điện phân dung dịch hỗn hợp gồm NaCl và 0,05 mol CuSO4 bằng dòng điện một chiều với cường độ 2A (điện cực trơ, có màng ngăn). Sau thời gian t giây thì ngừng điện phân, thu được khí ở hai điện cực có tổng thể tích là 2,352 lít (đktc) và dung dịch X. Dung dịch X hòa tan tối đa 2,04 gam Al2O3. Giả sử hiệu suất điện phân đạt 100%, các khí sinh ra không tan trong dung dịch. Giá trị của t là:

Hóa học Lớp 11

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Bài 34. Thực hành: Dụng cụ bảo vệ an toàn điện

Tại sao khi sử dụng bút thử điện, bắt buộc phải để tay vào kẹp kim loại ở nắp bút?

Công nghệ Lớp 8

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ĐỀ LUYỆN TỔNG HỢP (P5)

Phenol không phản ứng với chất nào sau đây ?

Hóa học Tốt nghiệp THPT

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Bài 34. Thực hành: Dụng cụ bảo vệ an toàn điện

Mô tả cấu tạo của bút thử điện.

Công nghệ Lớp 8

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Đề thi thử THPTQG năm 2019 chuẩn cấu trúc của bộ giáo dục có đáp án (Đề số 9)

Read the following passage and mark the letter A, B, c, or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks. NEIGHBOURS INFLUENCE BUYING DECISIONS However objective we believe ourselves to be, most of us do not judge a product solely on its merits, considering quality, value and style before making a decision. (34)__, we are easily influenced by the people around US. There is nothing wrong with this. It is probably a smarter way to make decisions than (35)on only our own opinions. But it does make life hard for companies. They have long understood that groups of friends and relatives tend to buy the same products, but understanding the reasons has been tricky. It is because they are so similar with (36)_to how much money they make and what television ads they watch that they independently arrive at the same decision? Or do they copy one another, perhaps (37)_envy or perhaps because they have shared information about the products? Research in Finland recently found overwhelming evidence that neighbours have a big influence on buying decisions. When one of a person’s ten nearest neighbours bought a car, the chances (38)_____ that person would buy a car of the same brand during the next week and a half rose by 86 per cent. The researchers argued that it was not just a matter of envy.Used cars seemed to attract neighbours even more than new cars. This suggested that people were not trying to keep up with their neighbours, they were keen to learn from them. Since used cars are less reliable, a recommendation of one can strongly influence a buying decision. Điền vào ô trống 36

Tiếng Anh Tốt nghiệp THPT

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Bài 34. Thực hành: Dụng cụ bảo vệ an toàn điện

Tại sao dòng điện qua bút thử điện lại không gây nguy hiểm cho người sử dụng?

Công nghệ Lớp 8

Xem chi tiết 6.1 K lượt xem 2 năm trước

Một số kiểu bài tập đặc biệt

Điện phân dung dịch X chứa x mol Cu(NO3)2 và y mol HCl với điện cực trơ đến khi catot bắt đầu có khí thoát ra thì ngừng điện phân. Tại anot thu được 3,36 lít hỗn hợp khí (đktc). Dung dịch sau điện phân hòa tan vừa hết 5,28 gam hỗn hợp gồm Mg và MgO, sau phản ứng thu được 27,44 gam muối và 0,448 lít khí N2O (đktc). Giá trị của y là:

Hóa học Lớp 11

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Tuyển tập đề thi thử Tiếng Anh cực hay có lời giải (Đề số 15)

Read the following passage and mark the letter A, B, C or D to indicate the correct answer to each of the questions from 36 to 42. Diversity is a hallmark of life, an intrinsic feature of living systems in the natural world. The demonstration and celebration of this diversity is an endless rite. Look at the popularity of museums, zoos, aquariums and botanic gardens. The odder the exhibit, the more different it is from the most common and familiar life forms around us, the more successful it is likely to be. Nature does not tire of providing oddities for people who look for them. Biologists have already formally classified 1.7 million species. As many as 30 to 40 million more may remain to be classified. (1) Most people seem to take diversity for granted. If they think about it at all they assume it exists in endless supply. Nevertheless, diversity is endangered as never before in its history. Advocates of perpetual economic growth treat living species as expendable. As a result an extinction crisis of unprecedented magnitude is under way. Worse yet, when diversity needs help most, it is neglected and misunderstood by much of the scientific community that once championed it. (2) Of the two great challenges to the legitimacy of this diversity, the familiar one comes primarily from economists. Their argument, associated with such names as Julian Simon, Malcolm McPherson and the late Herman Kahn, can be paraphrased: "First, if endangered species have a value as resources - which has been greatly exaggerated - then we should be able to quantify that value so that we can make unbiased, objective decisions about which species, if any, we should bother to save, and how much the effort is worth. Secondly, the global threat to the diversity of species, particularly in the tropics, has been overestimated. Thirdly, we have good substitutes for the species and ecosystems that are being lost, and these substitutes will nullify the damage caused by the extinctions". (3) The structure of the argument seems to me to be identical in form to that of an old joke from the American vaudeville circuit. One elderly lady complained to another about her recent vacation at a resort in the Catskill Mountains in New York State. "The food was terrible", she moaned. "Pure poison, I couldn't eat a bite. And the portions were so tiny!" (4) Species may be valuable, but not especially so, and the threat to them has been exaggerated. But this does not matter anyway, say the economists, because we can replace any species that vanishes.(5) It is not clear how much of an impact this argument has on the informed public, but it has certainly provoked an outcry among scientific conservationists. It has set the terms for, and dominated, most of the pro-diversity literature of the past few years, making it a literature of response, thus limiting its scope and creative force. Question 37: Which feature of the natural world do people find especially fascinating?

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ĐỀ LUYỆN TỔNG HỢP (P5)

Từ hợp chất hữu cơ X thực hiện các phản ứng (theo đúng tỉ lệ số mol): (1) X + 2NaOH → X1 + X2 + X3 (2) X1 + CuO →t∘ X4 + Cu + H2O (3) X4 + 4AgNO3 + 6NH3 + 2H2O →t∘ X5 + 4NH4NO3 + 4Ag (4) X2 + 2KOH →CaO,t∘ X6 + K2CO3 + Na2CO3 (5) X6 + O2 →t∘,xt X4 + H2O (6) X3 →H2SO4,t∘ CH2=CH-CH3 + H2O Phân tử khối của X là:

Hóa học Tốt nghiệp THPT

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Bài 34. Thực hành: Dụng cụ bảo vệ an toàn điện

Hãy nêu một số ví dụ về những bộ phận được làm bằng vật liệu cách điện trong những đồ dùng điện hang ngày, chúng được làm bằng vật liệu gì?

Công nghệ Lớp 8

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Đề thi thử THPTQG năm 2019 chuẩn cấu trúc của bộ giáo dục có đáp án (Đề số 9)

Read the following passage and mark the letter A, B, c, or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks. NEIGHBOURS INFLUENCE BUYING DECISIONS However objective we believe ourselves to be, most of us do not judge a product solely on its merits, considering quality, value and style before making a decision. (34)__, we are easily influenced by the people around US. There is nothing wrong with this. It is probably a smarter way to make decisions than (35)on only our own opinions. But it does make life hard for companies. They have long understood that groups of friends and relatives tend to buy the same products, but understanding the reasons has been tricky. It is because they are so similar with (36)_to how much money they make and what television ads they watch that they independently arrive at the same decision? Or do they copy one another, perhaps (37)_envy or perhaps because they have shared information about the products? Research in Finland recently found overwhelming evidence that neighbours have a big influence on buying decisions. When one of a person’s ten nearest neighbours bought a car, the chances (38)_____ that person would buy a car of the same brand during the next week and a half rose by 86 per cent. The researchers argued that it was not just a matter of envy.Used cars seemed to attract neighbours even more than new cars. This suggested that people were not trying to keep up with their neighbours, they were keen to learn from them. Since used cars are less reliable, a recommendation of one can strongly influence a buying decision. Điền vào ô trống 35

Tiếng Anh Tốt nghiệp THPT

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Một số kiểu bài tập đặc biệt

Điện phân dung dịch X chứa a mol CuSO4 và b mol NaCl với điện cực trơ, màng ngăn xốp và cường độ dòng điện không đổi trong thời gian t giây thu được 2,8 lít khí ở cả hai điện cực. Nếu thời gian điện phân là 2t giây thì thể tích khí thu được ở hai điện cực là 7,28 lít. Dung dịch thu được có khả năng tạo kết tủa với dung dịch AgNO3. Biết thể tích các khí đo ở đktc, hiệu suất điện phân đạt 100% và khí sinh ra thoát ra hết khỏi dung dịch. Giá trị của a là:

Hóa học Lớp 11

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Tuyển tập đề thi thử Tiếng Anh cực hay có lời giải (Đề số 15)

Read the following passage and mark the letter A, B, C or D to indicate the correct answer to each of the questions from 36 to 42. Diversity is a hallmark of life, an intrinsic feature of living systems in the natural world. The demonstration and celebration of this diversity is an endless rite. Look at the popularity of museums, zoos, aquariums and botanic gardens. The odder the exhibit, the more different it is from the most common and familiar life forms around us, the more successful it is likely to be. Nature does not tire of providing oddities for people who look for them. Biologists have already formally classified 1.7 million species. As many as 30 to 40 million more may remain to be classified. (1) Most people seem to take diversity for granted. If they think about it at all they assume it exists in endless supply. Nevertheless, diversity is endangered as never before in its history. Advocates of perpetual economic growth treat living species as expendable. As a result an extinction crisis of unprecedented magnitude is under way. Worse yet, when diversity needs help most, it is neglected and misunderstood by much of the scientific community that once championed it. (2) Of the two great challenges to the legitimacy of this diversity, the familiar one comes primarily from economists. Their argument, associated with such names as Julian Simon, Malcolm McPherson and the late Herman Kahn, can be paraphrased: "First, if endangered species have a value as resources - which has been greatly exaggerated - then we should be able to quantify that value so that we can make unbiased, objective decisions about which species, if any, we should bother to save, and how much the effort is worth. Secondly, the global threat to the diversity of species, particularly in the tropics, has been overestimated. Thirdly, we have good substitutes for the species and ecosystems that are being lost, and these substitutes will nullify the damage caused by the extinctions". (3) The structure of the argument seems to me to be identical in form to that of an old joke from the American vaudeville circuit. One elderly lady complained to another about her recent vacation at a resort in the Catskill Mountains in New York State. "The food was terrible", she moaned. "Pure poison, I couldn't eat a bite. And the portions were so tiny!" (4) Species may be valuable, but not especially so, and the threat to them has been exaggerated. But this does not matter anyway, say the economists, because we can replace any species that vanishes.(5) It is not clear how much of an impact this argument has on the informed public, but it has certainly provoked an outcry among scientific conservationists. It has set the terms for, and dominated, most of the pro-diversity literature of the past few years, making it a literature of response, thus limiting its scope and creative force. Question 36: The word "intrinsic" in the passage is closest in meaning to _________.

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Lớp 12

Lớp 11

Lớp 10

Ôn vào 10

Lớp 9

Lớp 8

Lớp 7

Lớp 6

Ôn vào 6

Lớp 5

Lớp 4

Lớp 3

Lớp 2

Lớp 1

Đại học

ĐGNL - ĐGTD

Tốt nghiệp THPT

Ôn vào 10

Ôn vào 6

V-ACT

HSA

TSA

SPT

Toán

Văn

Tiếng Anh

Vật lý

Hóa học

Sinh học

Lịch sử

Địa lý

Giáo dục Kinh tế và Pháp luật

Tin học

Công nghệ

Toán

Văn

Tiếng Anh

Vật lí

Hóa học

Sinh học

Lịch sử

Địa lí

Giáo dục Kinh tế và Pháp luật

Tin học

Công nghệ

Toán

Văn

Tiếng Anh

Vật lí

Hóa học

Sinh học

Lịch sử

Địa lí

Giáo dục Kinh tế và Pháp luật

Tin học

Công nghệ

Toán

Văn

Tiếng Anh

Vật lý

Hóa học

Sinh học

Lịch sử

Địa lí

Giáo dục Kinh tế và Pháp luật

Tin học

Công nghệ

Toán

Văn

Tiếng Anh

Vật lý

Hóa học

Sinh học

Khoa học tự nhiên

Tin học

Lịch sử

Địa lí

Toán

Văn

Tiếng Anh