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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        Archimedes’s Principle is a law of physics that states that when an object is totally or partially immersed in a fluid, it experiences an upthrust equal to the weight of the fluid displaced. The principle is most frequently applied to the behaviour of objects in water, and helps to explain floating and sinking, and why objects seem lighter in water. It also applies to balloons.        The key word in the principle is “upthrust”, which refers to the force acting upward to reduce the apparent weight of the object when it is under water. If, for example, a metal block with a volume of 100 cm3  is dipped in water, it displaces an equal volume of water, which has a weight of approximately 1 N (3.5 oz). The block therefore seems to weigh about 1 N less.        An object will float if its average density is less than that of water. If it is totally submerged, the weight of the water it displaces (and hence the upthrust on it) is greater than its own weight, and it is forced upward and out of water, until the weight if water displaced by submerged part is exactly equal to the weight of the floating object. Thus a block of wood with a density six tenths that of water will float with six tenths of its volume under water, since at that point the weight of fluid displaced is the same as the blocks’s own weight. If a dense material is made into a suitable shape, it will float because of Archimedes’s principle. A ship floats, whereas a block of iron of the same mass sinks.        It is also because of Archimedes’s principle that ships float lower in the water when they are heavily loaded (more water must be displaced to give the necessary upthrust). In addition, they cannot be so heavily loaded if they are to sail in fresh water as they can if they are to sail in the sea, since fresh water is less dense than sea water, and so more water must be displaced to give the necessary upthrust. This means the ship is lower in the water, which can be dangerous in rough weather.         From “Archimedes’s Principle”, MicrosoftÒ Student 2008[DVD]. Microsoft Corporation, 2007.The word “displaces” in the passage almost means “_____”

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Tổng hợp đề thi thử THPTQG môn Vật Lí cực hay có lời giải (Đề số 4)

Trên một sợi dây đàn hồi đang có sóng dừng ổn định với khoảng cách giữa hai vị trí cân bằng của một bụng sóng với một nút sóng cạnh nhau là 6 cm. Tốc độ truyền sóng trên dây là 1,2 m/s và biên độ dao động của bụng sóng là 4 cm. Gọi N là vị trí của nút sóng, P và Q là hai phần tử trên dây và ở hai bên của N có vị trí cân bằng cách N lần lượt là 15 cm và 16 cm. Tại thời điểm t, phần tử P có li độ 2 cm và đang hướng về vị trí cân bằng. Sau thời điểm đó một khoảng thời gian ∆t thì phần tử Q có li độ là 3 cm, giá trị của ∆t là

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ĐỀ 19

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        Archimedes’s Principle is a law of physics that states that when an object is totally or partially immersed in a fluid, it experiences an upthrust equal to the weight of the fluid displaced. The principle is most frequently applied to the behaviour of objects in water, and helps to explain floating and sinking, and why objects seem lighter in water. It also applies to balloons.        The key word in the principle is “upthrust”, which refers to the force acting upward to reduce the apparent weight of the object when it is under water. If, for example, a metal block with a volume of 100 cm3  is dipped in water, it displaces an equal volume of water, which has a weight of approximately 1 N (3.5 oz). The block therefore seems to weigh about 1 N less.        An object will float if its average density is less than that of water. If it is totally submerged, the weight of the water it displaces (and hence the upthrust on it) is greater than its own weight, and it is forced upward and out of water, until the weight if water displaced by submerged part is exactly equal to the weight of the floating object. Thus a block of wood with a density six tenths that of water will float with six tenths of its volume under water, since at that point the weight of fluid displaced is the same as the blocks’s own weight. If a dense material is made into a suitable shape, it will float because of Archimedes’s principle. A ship floats, whereas a block of iron of the same mass sinks.        It is also because of Archimedes’s principle that ships float lower in the water when they are heavily loaded (more water must be displaced to give the necessary upthrust). In addition, they cannot be so heavily loaded if they are to sail in fresh water as they can if they are to sail in the sea, since fresh water is less dense than sea water, and so more water must be displaced to give the necessary upthrust. This means the ship is lower in the water, which can be dangerous in rough weather.         From “Archimedes’s Principle”, MicrosoftÒ Student 2008[DVD]. Microsoft Corporation, 2007.The word “volume” in the passage refers to ______.

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BỘ ĐỀ THI THPT QUỐC GIA CHUẨN CẤU TRÚC BỘ GIÁO DỤC MÔN TIẾNG ANH (P10)

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 28 to 34.The election of Andrew Jackson to the presidency in 1928 marked the political ascendancy of the “common man” in American politics. His name became a household word during the war of 1812, when, as a U.S Army major general, he led troops against the Creek Indians in the Mississippi Territory and later defeated the British at New Orleans.After his presidential inauguration, Jackson rode on horseback to the White House to attend a private party. Crowds of well-wishers suddenly appeared at the reception and nearly destroyed the White House as they tried to glimpse the new president. The common man had made a dramatic entrance onto the national political scene.Jackson’s two terms moved American society toward truer democracy. Many states abandoned property requirements for voting. Elected officials began to act more truly as representatives of the people than as their leaders. As president of the common man, Jackson waged a war against the Bank of the United States, vetoing the bill that re-chartered the institution, declaring it a dangerous monopoly that profited the wealthy few.Although he had built his reputation as an Indian tighter during the War ol 1812, Jackson was not an Indian hater. He adopted what was at the time considered an enlightened solution to the Indian problem-removal. Many tribes submitted peacelully to being moved to the West. Others were marched by force to the Indian Territory, under brutal conditions, along what the Cherokees called the Trail of Tears.One of Andrew Jackson’s most enduring legacies was the Democratic Party, which under him became a highly organized political party. In opposition to the Democrats were the Whigs, a party that attracted supporters of the Bank of the United States and opposed the tyranny of the man called “King Andrew”. A less specific but more basic legacy is the populist philosophy oi politics that still bears the name “Jacksonian Democracy.”Which of the following is NOT attributed to Andrew Jackson?

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Tổng hợp đề thi thử THPTQG môn Vật Lí cực hay có lời giải (Đề số 4)

Trong thí nghiệm Y-âng về giao thoa ánh sáng. Lần thứ nhất, ánh sáng dùng trong thí nghiệm có 2 loại bức xạ λ1 = 0,56 µm và λ2 với 0,65 µm < λ < 0,75 µm, thì trong khoảng giữa hai vật sáng gần nhau nhất cùng màu với vạch sáng trung tâm có 6 vân sáng màu đỏ λ2. Lần thứ 2 ánh sáng dùng trong thí nghiệm có 3 loại bức xạ λ1, λ2 và λ3, với λ3 = 2/3 λ2. Khi đó trong khoảng giữa hai vạch sáng gần nhau nhất và cùng màu với vạch sáng trung tâm có bao nhiêu vân sáng màu đỏ

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ĐỀ 19

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        Archimedes’s Principle is a law of physics that states that when an object is totally or partially immersed in a fluid, it experiences an upthrust equal to the weight of the fluid displaced. The principle is most frequently applied to the behaviour of objects in water, and helps to explain floating and sinking, and why objects seem lighter in water. It also applies to balloons.        The key word in the principle is “upthrust”, which refers to the force acting upward to reduce the apparent weight of the object when it is under water. If, for example, a metal block with a volume of 100 cm3  is dipped in water, it displaces an equal volume of water, which has a weight of approximately 1 N (3.5 oz). The block therefore seems to weigh about 1 N less.        An object will float if its average density is less than that of water. If it is totally submerged, the weight of the water it displaces (and hence the upthrust on it) is greater than its own weight, and it is forced upward and out of water, until the weight if water displaced by submerged part is exactly equal to the weight of the floating object. Thus a block of wood with a density six tenths that of water will float with six tenths of its volume under water, since at that point the weight of fluid displaced is the same as the blocks’s own weight. If a dense material is made into a suitable shape, it will float because of Archimedes’s principle. A ship floats, whereas a block of iron of the same mass sinks.        It is also because of Archimedes’s principle that ships float lower in the water when they are heavily loaded (more water must be displaced to give the necessary upthrust). In addition, they cannot be so heavily loaded if they are to sail in fresh water as they can if they are to sail in the sea, since fresh water is less dense than sea water, and so more water must be displaced to give the necessary upthrust. This means the ship is lower in the water, which can be dangerous in rough weather.         From “Archimedes’s Principle”, MicrosoftÒ Student 2008[DVD]. Microsoft Corporation, 2007.What happens when something is immersed in a fluid?

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BỘ ĐỀ THI THPT QUỐC GIA CHUẨN CẤU TRÚC BỘ GIÁO DỤC MÔN TIẾNG ANH (P10)

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 28 to 34.The election of Andrew Jackson to the presidency in 1928 marked the political ascendancy of the “common man” in American politics. His name became a household word during the war of 1812, when, as a U.S Army major general, he led troops against the Creek Indians in the Mississippi Territory and later defeated the British at New Orleans.After his presidential inauguration, Jackson rode on horseback to the White House to attend a private party. Crowds of well-wishers suddenly appeared at the reception and nearly destroyed the White House as they tried to glimpse the new president. The common man had made a dramatic entrance onto the national political scene.Jackson’s two terms moved American society toward truer democracy. Many states abandoned property requirements for voting. Elected officials began to act more truly as representatives of the people than as their leaders. As president of the common man, Jackson waged a war against the Bank of the United States, vetoing the bill that re-chartered the institution, declaring it a dangerous monopoly that profited the wealthy few.Although he had built his reputation as an Indian tighter during the War ol 1812, Jackson was not an Indian hater. He adopted what was at the time considered an enlightened solution to the Indian problem-removal. Many tribes submitted peacelully to being moved to the West. Others were marched by force to the Indian Territory, under brutal conditions, along what the Cherokees called the Trail of Tears.One of Andrew Jackson’s most enduring legacies was the Democratic Party, which under him became a highly organized political party. In opposition to the Democrats were the Whigs, a party that attracted supporters of the Bank of the United States and opposed the tyranny of the man called “King Andrew”. A less specific but more basic legacy is the populist philosophy oi politics that still bears the name “Jacksonian Democracy.”The word “brutal” in paragraph 4 is closest in meaning to ______.

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BỘ ĐỀ THI THPT QUỐC GIA CHUẨN CẤU TRÚC BỘ GIÁO DỤC MÔN TIẾNG ANH (P10)

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 28 to 34.The election of Andrew Jackson to the presidency in 1928 marked the political ascendancy of the “common man” in American politics. His name became a household word during the war of 1812, when, as a U.S Army major general, he led troops against the Creek Indians in the Mississippi Territory and later defeated the British at New Orleans.After his presidential inauguration, Jackson rode on horseback to the White House to attend a private party. Crowds of well-wishers suddenly appeared at the reception and nearly destroyed the White House as they tried to glimpse the new president. The common man had made a dramatic entrance onto the national political scene.Jackson’s two terms moved American society toward truer democracy. Many states abandoned property requirements for voting. Elected officials began to act more truly as representatives of the people than as their leaders. As president of the common man, Jackson waged a war against the Bank of the United States, vetoing the bill that re-chartered the institution, declaring it a dangerous monopoly that profited the wealthy few.Although he had built his reputation as an Indian tighter during the War ol 1812, Jackson was not an Indian hater. He adopted what was at the time considered an enlightened solution to the Indian problem-removal. Many tribes submitted peacelully to being moved to the West. Others were marched by force to the Indian Territory, under brutal conditions, along what the Cherokees called the Trail of Tears.One of Andrew Jackson’s most enduring legacies was the Democratic Party, which under him became a highly organized political party. In opposition to the Democrats were the Whigs, a party that attracted supporters of the Bank of the United States and opposed the tyranny of the man called “King Andrew”. A less specific but more basic legacy is the populist philosophy oi politics that still bears the name “Jacksonian Democracy.”According to the passage, Jackson’s policy toward American Indians was ___________.

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ĐỀ 19

Mark the letter A, B, G 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.Experts hope that the vaccine will be mass-produced soon. 

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BỘ ĐỀ THI THPT QUỐC GIA CHUẨN CẤU TRÚC BỘ GIÁO DỤC MÔN TIẾNG ANH (P10)

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 28 to 34.The election of Andrew Jackson to the presidency in 1928 marked the political ascendancy of the “common man” in American politics. His name became a household word during the war of 1812, when, as a U.S Army major general, he led troops against the Creek Indians in the Mississippi Territory and later defeated the British at New Orleans.After his presidential inauguration, Jackson rode on horseback to the White House to attend a private party. Crowds of well-wishers suddenly appeared at the reception and nearly destroyed the White House as they tried to glimpse the new president. The common man had made a dramatic entrance onto the national political scene.Jackson’s two terms moved American society toward truer democracy. Many states abandoned property requirements for voting. Elected officials began to act more truly as representatives of the people than as their leaders. As president of the common man, Jackson waged a war against the Bank of the United States, vetoing the bill that re-chartered the institution, declaring it a dangerous monopoly that profited the wealthy few.Although he had built his reputation as an Indian tighter during the War ol 1812, Jackson was not an Indian hater. He adopted what was at the time considered an enlightened solution to the Indian problem-removal. Many tribes submitted peacelully to being moved to the West. Others were marched by force to the Indian Territory, under brutal conditions, along what the Cherokees called the Trail of Tears.One of Andrew Jackson’s most enduring legacies was the Democratic Party, which under him became a highly organized political party. In opposition to the Democrats were the Whigs, a party that attracted supporters of the Bank of the United States and opposed the tyranny of the man called “King Andrew”. A less specific but more basic legacy is the populist philosophy oi politics that still bears the name “Jacksonian Democracy.”According to the passage, why did Jackson oppose the Bank of the United States?

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ĐỀ 19

Mark the letter A, B, G 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.It gives out light, but not heat and so is safe to use near inflammable liquids

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Đề thi thử THPTGQ môn Toán cực cực hay có lời giải chi tiết(Đề 6)

Cho tứ diện ABCD, G là trọng tâm của tam giác ABD và M là điểm trên cạnh BC sao cho BM=2MC. Đường thẳng  MG song song với mặt phẳng

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Tổng hợp đề thi thử THPTQG môn Vật Lí cực hay có lời giải (Đề số 4)

Lần lượt đặt vào hai đầu đoạn mạch xoay chiều gồm biến trở R, cuộn cảm thuần L và tụ điện C nối tiếp hai điện áp xoay chiều u1=U12cos(ω1t+ω1)V và u2=U22cos(ω2t+ω2)V người ta thu được đồ thị hình công suất mạch theo biến trở R như hình vẽ. Biết rằng P2 max = x. Giá trị của x gần giá trị nào nhất sau đây?

Vật lý Tốt nghiệp THPT
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BỘ ĐỀ THI THPT QUỐC GIA CHUẨN CẤU TRÚC BỘ GIÁO DỤC MÔN TIẾNG ANH (P10)

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 28 to 34.The election of Andrew Jackson to the presidency in 1928 marked the political ascendancy of the “common man” in American politics. His name became a household word during the war of 1812, when, as a U.S Army major general, he led troops against the Creek Indians in the Mississippi Territory and later defeated the British at New Orleans.After his presidential inauguration, Jackson rode on horseback to the White House to attend a private party. Crowds of well-wishers suddenly appeared at the reception and nearly destroyed the White House as they tried to glimpse the new president. The common man had made a dramatic entrance onto the national political scene.Jackson’s two terms moved American society toward truer democracy. Many states abandoned property requirements for voting. Elected officials began to act more truly as representatives of the people than as their leaders. As president of the common man, Jackson waged a war against the Bank of the United States, vetoing the bill that re-chartered the institution, declaring it a dangerous monopoly that profited the wealthy few.Although he had built his reputation as an Indian tighter during the War ol 1812, Jackson was not an Indian hater. He adopted what was at the time considered an enlightened solution to the Indian problem-removal. Many tribes submitted peacelully to being moved to the West. Others were marched by force to the Indian Territory, under brutal conditions, along what the Cherokees called the Trail of Tears.One of Andrew Jackson’s most enduring legacies was the Democratic Party, which under him became a highly organized political party. In opposition to the Democrats were the Whigs, a party that attracted supporters of the Bank of the United States and opposed the tyranny of the man called “King Andrew”. A less specific but more basic legacy is the populist philosophy oi politics that still bears the name “Jacksonian Democracy.”The author suggests that Jackson’s election and inauguration _______.

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Bài 24: Suất điện động cảm ứng

Một nam châm thẳng có từ trường hướng vào lòng ống dây. Trong trường hợp nào dưới đây suất điện động trong ống dây lớn nhất?

Vật lý Lớp 11
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ĐỀ 19

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 questions. There were so many members of the political party who had gone against the leader that he resigned.

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BỘ ĐỀ THI THPT QUỐC GIA CHUẨN CẤU TRÚC BỘ GIÁO DỤC MÔN TIẾNG ANH (P10)

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 28 to 34.The election of Andrew Jackson to the presidency in 1928 marked the political ascendancy of the “common man” in American politics. His name became a household word during the war of 1812, when, as a U.S Army major general, he led troops against the Creek Indians in the Mississippi Territory and later defeated the British at New Orleans.After his presidential inauguration, Jackson rode on horseback to the White House to attend a private party. Crowds of well-wishers suddenly appeared at the reception and nearly destroyed the White House as they tried to glimpse the new president. The common man had made a dramatic entrance onto the national political scene.Jackson’s two terms moved American society toward truer democracy. Many states abandoned property requirements for voting. Elected officials began to act more truly as representatives of the people than as their leaders. As president of the common man, Jackson waged a war against the Bank of the United States, vetoing the bill that re-chartered the institution, declaring it a dangerous monopoly that profited the wealthy few.Although he had built his reputation as an Indian tighter during the War ol 1812, Jackson was not an Indian hater. He adopted what was at the time considered an enlightened solution to the Indian problem-removal. Many tribes submitted peacelully to being moved to the West. Others were marched by force to the Indian Territory, under brutal conditions, along what the Cherokees called the Trail of Tears.One of Andrew Jackson’s most enduring legacies was the Democratic Party, which under him became a highly organized political party. In opposition to the Democrats were the Whigs, a party that attracted supporters of the Bank of the United States and opposed the tyranny of the man called “King Andrew”. A less specific but more basic legacy is the populist philosophy oi politics that still bears the name “Jacksonian Democracy.”The phrase “became the household word” in paragraph I means that _______.

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Bài 24: Suất điện động cảm ứng

Khi cho nam châm chuyển động qua một mạch kín, trong mạch xuất hiện dòng điện cảm ứng. Điện năng của dòng điện được chuyển hoá từ

Vật lý Lớp 11
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ĐỀ 19

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 questions. The newscaster gave a concise account of the tragedy

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Đề thi thử THPTGQ môn Toán cực cực hay có lời giải chi tiết(Đề 6)

Cho hàm số y=13x3-2x2+2x+1  có đồ thị (C). Biết đồ thị (C) có hai tiếp tuyến cùng vuông góc với đường thẳng d: y = x.  Gọi h là khoảng cách giữa hai tiếp tuyến đó. Khẳng định nào sau đây đúng?

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Bài 24: Suất điện động cảm ứng

Đại lượng ∆ϕ∆t  được gọi là

Vật lý Lớp 11
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Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer for each of the blanks Sugar was for a long time a luxury and in the opinion of the medical profession it still should be. During the nineteenth century, however, manufactures discovered (22) ______ of producing it in vast quantities and it has since become one of the staple articles of diet, particularly for the lower social classes. It has the advantages of being comparatively cheap, easily digested, rich in energy and useful for flavoring. Its major drawbacks are that it lacks every nourishing quality except that of giving energy, and because of its attractive flavor it (23)______ to displace other much more valuable foods from the diet. Most serious of all is its adverse (24) _____ on health, since excessive consumption can cause heart trouble, obesity and dental decay. The latter is widespread among the inhabitants of western countries. From the very young to the very old, (25) ______ anyone escapes. Yet if parents would drastically reduce the (26) ______ of confectionery they allow their children to eat, the extend of dental decay would soon be madeĐiền ô số 26

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BỘ ĐỀ THI THPT QUỐC GIA CHUẨN CẤU TRÚC BỘ GIÁO DỤC MÔN TIẾNG ANH (P10)

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 from 23 to 27  The warming of the Pacific Ocean has created weather pattern (23)­________ strongly affect the world. When the water is warm, the amount of rainfall in Indonesia and surrounding regions decreases. Australia could (24) ­________ experience a drought in many parts. On the other hand, Chile (which borders the Pacific Ocean) is preparing for severe rainstorms. In Pakistan and northwestern India, the weather pattern makes the rainy season weaker and makes the area much drier.This happening is called El Nino and is used (25) ­________ weather forecasters to make long-range weather predictions. They also know that El Nino will bring unusually rain to the southwestern part of the United States and make the central part of the country drier at the same time.According to research, weather forecasters (26) ­________ know about the coming weather with certainty. Now everything has become completely different.El Nino itself used to be predictable. It would occur every two to seven years. But now this weather pattern is becoming more frequent. We cannot say when and how often tornadoes or cyclones occur. Scientists are unsure of the reason for this (27) ­________ on the global scale either.Điền ô 27

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ĐỀ 19

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer for each of the blanks Sugar was for a long time a luxury and in the opinion of the medical profession it still should be. During the nineteenth century, however, manufactures discovered (22) ______ of producing it in vast quantities and it has since become one of the staple articles of diet, particularly for the lower social classes. It has the advantages of being comparatively cheap, easily digested, rich in energy and useful for flavoring. Its major drawbacks are that it lacks every nourishing quality except that of giving energy, and because of its attractive flavor it (23)______ to displace other much more valuable foods from the diet. Most serious of all is its adverse (24) _____ on health, since excessive consumption can cause heart trouble, obesity and dental decay. The latter is widespread among the inhabitants of western countries. From the very young to the very old, (25) ______ anyone escapes. Yet if parents would drastically reduce the (26) ______ of confectionery they allow their children to eat, the extend of dental decay would soon be madeĐiền ô số 25

Tiếng Anh Tốt nghiệp THPT
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BỘ ĐỀ THI THPT QUỐC GIA CHUẨN CẤU TRÚC BỘ GIÁO DỤC MÔN TIẾNG ANH (P10)

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 from 23 to 27  The warming of the Pacific Ocean has created weather pattern (23)­________ strongly affect the world. When the water is warm, the amount of rainfall in Indonesia and surrounding regions decreases. Australia could (24) ­________ experience a drought in many parts. On the other hand, Chile (which borders the Pacific Ocean) is preparing for severe rainstorms. In Pakistan and northwestern India, the weather pattern makes the rainy season weaker and makes the area much drier.This happening is called El Nino and is used (25) ­________ weather forecasters to make long-range weather predictions. They also know that El Nino will bring unusually rain to the southwestern part of the United States and make the central part of the country drier at the same time.According to research, weather forecasters (26) ­________ know about the coming weather with certainty. Now everything has become completely different.El Nino itself used to be predictable. It would occur every two to seven years. But now this weather pattern is becoming more frequent. We cannot say when and how often tornadoes or cyclones occur. Scientists are unsure of the reason for this (27) ­________ on the global scale either.Điền ô 26

Tiếng Anh Tốt nghiệp THPT
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Tổng hợp đề thi thử THPTQG môn Vật Lí cực hay có lời giải (Đề số 4)

Mạch dao động LC lí tưởng có L = 5 μH và C = 8 nF. Tại thời điểm t, tụ đang phóng điện và điện tích của tụ tại thời điểm đó có giá trị q = 24 nC. Tại thời điểm t + 3π μs thì điện áp giữa hai bản tụ là

Vật lý Tốt nghiệp THPT
Xem chi tiết 739 lượt xem 5 năm trước
ĐỀ 19

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer for each of the blanks Sugar was for a long time a luxury and in the opinion of the medical profession it still should be. During the nineteenth century, however, manufactures discovered (22) ______ of producing it in vast quantities and it has since become one of the staple articles of diet, particularly for the lower social classes. It has the advantages of being comparatively cheap, easily digested, rich in energy and useful for flavoring. Its major drawbacks are that it lacks every nourishing quality except that of giving energy, and because of its attractive flavor it (23)______ to displace other much more valuable foods from the diet. Most serious of all is its adverse (24) _____ on health, since excessive consumption can cause heart trouble, obesity and dental decay. The latter is widespread among the inhabitants of western countries. From the very young to the very old, (25) ______ anyone escapes. Yet if parents would drastically reduce the (26) ______ of confectionery they allow their children to eat, the extend of dental decay would soon be madeĐiền ô số 24

Tiếng Anh Tốt nghiệp THPT
Xem chi tiết 505 lượt xem 5 năm trước
Đề minh họa đề thi Vật Lí cực hay có lời giải (Đề số 3)

Cho bốn tia phóng xạ: tia α , tia β+ , tia β- và tia γ  đi vào một miền có điện trường đều theo phương vuông góc với đường sức điện. Tia phóng xạ không bị lệch khỏi phương truyền ban đầu là

Vật lý Tốt nghiệp THPT
Xem chi tiết 318 lượt xem 5 năm trước
Đề thi thử THPTGQ môn Toán cực cực hay có lời giải chi tiết(Đề 6)

Kết quả của giới hạn limπn+3n+22n3πn-3n+22n+2  là

Toán Tốt nghiệp THPT
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BỘ ĐỀ THI THPT QUỐC GIA CHUẨN CẤU TRÚC BỘ GIÁO DỤC MÔN TIẾNG ANH (P10)

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 from 23 to 27  The warming of the Pacific Ocean has created weather pattern (23)­________ strongly affect the world. When the water is warm, the amount of rainfall in Indonesia and surrounding regions decreases. Australia could (24) ­________ experience a drought in many parts. On the other hand, Chile (which borders the Pacific Ocean) is preparing for severe rainstorms. In Pakistan and northwestern India, the weather pattern makes the rainy season weaker and makes the area much drier.This happening is called El Nino and is used (25) ­________ weather forecasters to make long-range weather predictions. They also know that El Nino will bring unusually rain to the southwestern part of the United States and make the central part of the country drier at the same time.According to research, weather forecasters (26) ­________ know about the coming weather with certainty. Now everything has become completely different.El Nino itself used to be predictable. It would occur every two to seven years. But now this weather pattern is becoming more frequent. We cannot say when and how often tornadoes or cyclones occur. Scientists are unsure of the reason for this (27) ­________ on the global scale either.Điền ô 25

Tiếng Anh Tốt nghiệp THPT
Xem chi tiết 280 lượt xem 5 năm trước
ĐỀ 19

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer for each of the blanks Sugar was for a long time a luxury and in the opinion of the medical profession it still should be. During the nineteenth century, however, manufactures discovered (22) ______ of producing it in vast quantities and it has since become one of the staple articles of diet, particularly for the lower social classes. It has the advantages of being comparatively cheap, easily digested, rich in energy and useful for flavoring. Its major drawbacks are that it lacks every nourishing quality except that of giving energy, and because of its attractive flavor it (23)______ to displace other much more valuable foods from the diet. Most serious of all is its adverse (24) _____ on health, since excessive consumption can cause heart trouble, obesity and dental decay. The latter is widespread among the inhabitants of western countries. From the very young to the very old, (25) ______ anyone escapes. Yet if parents would drastically reduce the (26) ______ of confectionery they allow their children to eat, the extend of dental decay would soon be madeĐiền ô số 23

Tiếng Anh Tốt nghiệp THPT
Xem chi tiết 274 lượt xem 5 năm trước
Bài 24: Suất điện động cảm ứng

Suất điện động cảm ứng trong mạch tỉ lệ với

Vật lý Lớp 11
Xem chi tiết 49.2 K lượt xem 5 năm trước
BỘ ĐỀ THI THPT QUỐC GIA CHUẨN CẤU TRÚC BỘ GIÁO DỤC MÔN TIẾNG ANH (P10)

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 from 23 to 27  The warming of the Pacific Ocean has created weather pattern (23)­________ strongly affect the world. When the water is warm, the amount of rainfall in Indonesia and surrounding regions decreases. Australia could (24) ­________ experience a drought in many parts. On the other hand, Chile (which borders the Pacific Ocean) is preparing for severe rainstorms. In Pakistan and northwestern India, the weather pattern makes the rainy season weaker and makes the area much drier.This happening is called El Nino and is used (25) ­________ weather forecasters to make long-range weather predictions. They also know that El Nino will bring unusually rain to the southwestern part of the United States and make the central part of the country drier at the same time.According to research, weather forecasters (26) ­________ know about the coming weather with certainty. Now everything has become completely different.El Nino itself used to be predictable. It would occur every two to seven years. But now this weather pattern is becoming more frequent. We cannot say when and how often tornadoes or cyclones occur. Scientists are unsure of the reason for this (27) ­________ on the global scale either.Điền ô 24

Tiếng Anh Tốt nghiệp THPT
Xem chi tiết 375 lượt xem 5 năm trước
ĐỀ 19

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer for each of the blanks Sugar was for a long time a luxury and in the opinion of the medical profession it still should be. During the nineteenth century, however, manufactures discovered (22) ______ of producing it in vast quantities and it has since become one of the staple articles of diet, particularly for the lower social classes. It has the advantages of being comparatively cheap, easily digested, rich in energy and useful for flavoring. Its major drawbacks are that it lacks every nourishing quality except that of giving energy, and because of its attractive flavor it (23)______ to displace other much more valuable foods from the diet. Most serious of all is its adverse (24) _____ on health, since excessive consumption can cause heart trouble, obesity and dental decay. The latter is widespread among the inhabitants of western countries. From the very young to the very old, (25) ______ anyone escapes. Yet if parents would drastically reduce the (26) ______ of confectionery they allow their children to eat, the extend of dental decay would soon be madeĐiền ô số 22

Tiếng Anh Tốt nghiệp THPT
Xem chi tiết 3.8 K lượt xem 5 năm trước
BỘ ĐỀ THI THPT QUỐC GIA CHUẨN CẤU TRÚC BỘ GIÁO DỤC MÔN TIẾNG ANH (P10)

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 from 23 to 27  The warming of the Pacific Ocean has created weather pattern (23)­________ strongly affect the world. When the water is warm, the amount of rainfall in Indonesia and surrounding regions decreases. Australia could (24) ­________ experience a drought in many parts. On the other hand, Chile (which borders the Pacific Ocean) is preparing for severe rainstorms. In Pakistan and northwestern India, the weather pattern makes the rainy season weaker and makes the area much drier.This happening is called El Nino and is used (25) ­________ weather forecasters to make long-range weather predictions. They also know that El Nino will bring unusually rain to the southwestern part of the United States and make the central part of the country drier at the same time.According to research, weather forecasters (26) ­________ know about the coming weather with certainty. Now everything has become completely different.El Nino itself used to be predictable. It would occur every two to seven years. But now this weather pattern is becoming more frequent. We cannot say when and how often tornadoes or cyclones occur. Scientists are unsure of the reason for this (27) ­________ on the global scale either.Điền ô 23

Tiếng Anh Tốt nghiệp THPT
Xem chi tiết 263 lượt xem 5 năm trước
Tổng hợp đề thi thử THPTQG môn Vật Lí cực hay có lời giải (Đề số 4)

Dùng một hạt α có động năng 7,7 MeV bắn vào hạt nhân N714 đang đứng yên gây ra phản ứng: α+N714→p11+O817. Hạt proton bay theo phương vuông góc với phương bay tới của hạt α. Cho khối lượng các hạt nhân: mα = 4,0015 u; mp = 1,0073 u; mN14 = 13,9992 u; mO17 = 16,9947 u. Biết Iu = 931,5 MeV/e2. Điện năng của hạt nhân là

Vật lý Tốt nghiệp THPT
Xem chi tiết 381 lượt xem 5 năm trước
Bài 24: Suất điện động cảm ứng

Phát biểu nào sau đây không đúng? Suất điện động cảm ứng trong một mạch

Vật lý Lớp 11
Xem chi tiết 55.9 K lượt xem 3 năm trước
ĐỀ 19

Mark the letter A, B, C, or D on your answer sheet to indicate the most suitable response to complete each of the following exchanges- John: "I can't see the stage very well from here." - Jack: "             "

Tiếng Anh Tốt nghiệp THPT
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BỘ ĐỀ THI THPT QUỐC GIA CHUẨN CẤU TRÚC BỘ GIÁO DỤC MÔN TIẾNG ANH (P10)

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.It gets _________ to understand what the professor has explained.

Tiếng Anh Tốt nghiệp THPT
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Đề minh họa đề thi Vật Lí cực hay có lời giải (Đề số 3)

Trong các nhà hàng, khách sạn, rạp chiếu phim,v.v… có lắp máy sấy tay cảm ứng trong nhà vệ sinh. Khi người sử dụng đưa tay vào vùng cảm ứng, thiết bị sẽ tự động sấy để làm khô tay và ngắt khi người sử dụng đưa tay ra. Máy sấy tay này hoạt động dựa trên

Vật lý Tốt nghiệp THPT
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Đề thi thử THPTGQ môn Toán cực cực hay có lời giải chi tiết(Đề 6)

Một cửa hàng ngày đầu chỉ bán được 5 sản phẩm, nhưng do quảng cáo hiệu quả và chất lượng sản phẩm tốt nên những ngày sau số lượng sản phầm bán ra đều tăng gấp đôi so với ngày trước đó. Số ngày ít nhất để cửa hàng đó bán hết 1200 sản phẩm là?

Toán Tốt nghiệp THPT
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BỘ ĐỀ THI THPT QUỐC GIA CHUẨN CẤU TRÚC BỘ GIÁO DỤC MÔN TIẾNG ANH (P10)

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.I was doing my homework _________ the light went out

Tiếng Anh Tốt nghiệp THPT
Xem chi tiết 1.1 K lượt xem 5 năm trước
ĐỀ 19

Mark the letter A, B, C, or D on your answer sheet to indicate the most suitable response to complete each of the following exchangesPeter: "I've been awarded a scholarship to study in America."  ~ Kate: "Uh, really?         "

Tiếng Anh Tốt nghiệp THPT
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BỘ ĐỀ THI THPT QUỐC GIA CHUẨN CẤU TRÚC BỘ GIÁO DỤC MÔN TIẾNG ANH (P10)

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.We need _________ information before we can decide

Tiếng Anh Tốt nghiệp THPT
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ĐỀ 19

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.I'm sorry you've decided not to go with us on the river trip, but               you change your mind, there will still be enough room on the boat for you

Tiếng Anh Tốt nghiệp THPT
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Đề minh họa đề thi Vật Lí cực hay có lời giải (Đề số 3)

Phương trình nào sau đây không phải là phương trình của định luật Bôi-lơ-Ma-ri-ốt?

Vật lý Tốt nghiệp THPT
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BỘ ĐỀ THI THPT QUỐC GIA CHUẨN CẤU TRÚC BỘ GIÁO DỤC MÔN TIẾNG ANH (P10)

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.It is recommended that he _________ this course

Tiếng Anh Tốt nghiệp THPT
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Đề thi thử THPTGQ môn Toán cực cực hay có lời giải chi tiết(Đề 6)

Cho cấp số cộng un  có u1=-1  công sai d=2. Gọi Sn là tổng n số hạng đầu tiên của cấp số cộng. Tỷ số S2018S2019  bằng 

Toán Tốt nghiệp THPT
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ĐỀ 19

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.The at the football match cheered their team on.

Tiếng Anh Tốt nghiệp THPT
Xem chi tiết 11.8 K lượt xem 5 năm trước
BỘ ĐỀ THI THPT QUỐC GIA CHUẨN CẤU TRÚC BỘ GIÁO DỤC MÔN TIẾNG ANH (P10)

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.Peter _________ a book when I saw him

Tiếng Anh Tốt nghiệp THPT
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