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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 from 30 to 34.
Ocean water plays an indispensable role in supporting life. The great ocean basins hold about 300 million cubic miles of water. From this vast amount, about 80,000 cubic miles of water are sucked into the atmosphere each year by evaporation and returned by precipitation and drainage to the ocean. More than 24,000 cubic miles of rain descend annually upon the continents. This vast amount is required to replenish the lakes and streams, springs and water tables on which all flora and fauna are dependent. Thus, the hydrosphere permits organic existence.
The hydrosphere has strange characteristics because water has properties unlike those of any other liquid. One anomaly is that water upon freezing expands by about 9 percent, whereas most liquids contract on cooling. For this reason, ice floats on water bodies instead of sinking to the bottom. If the ice sank, the hydrosphere would soon be frozen solidly, except for a thin layer of surface melt water during the summer season. Thus, all aquatic life would be destroyed and the interchange of warm and cold currents, which moderates climate, would be notably absent.
Another outstanding characteristic of water is that water has a heat capacity which is the highest of all liquids and solids except ammonia. This characteristic enables the oceans to absorb and store vast quantities of heat, thereby often preventing climatic extremes. In addition, water dissolves more substances than any other liquid. It is this characteristic which helps make oceans a great storehouse for minerals which have been washed down from the continents. In several areas of the world these minerals are being commercially exploited. Solar evaporation of salt is widely practised, potash is extracted from the Dead Sea, and magnesium is produced from sea water along the American Gulf Coast.
Câu hỏi:The author’s main purpose in this passage is to ___________.
- A. illustrate the importance of conserving water
- B. describe the properties and uses of water
- C. compare water with other liquids
- D. explain how water is used in commerce and industry
Lời giải tham khảo:
Đáp án đúng: B
Đáp án B.
Dịch câu hỏi: Mục đích chính của tác giả trong đoạn văn này là để ___________.
A. minh họa tầm quan trọng của việc bảo tồn nước
B. mô tả tính chất và công dụng của nước
C. so sánh nước với các chất lỏng khác
D. giải thích cách sử dụng nước trong thương mại và công nghiệp
Thông tin: “Ocean water plays an indispensable role in supporting life.” (Nước biển đóng vai trò không thể thiếu trong việc hỗ trợ cuộc sống.)
“The hydrosphere has strange characteristics because water has properties unlike those of any other liquid.” (Thủy quyển có những đặc điểm kỳ lạ vì nước có đặc tính không giống với bất kỳ chất lỏng nào khác.)
“Another outstanding characteristic of water is that water has a heat capacity,...” (Một đặc điểm nổi bật khác của nước là nước có nhiệt dung,...)
Câu hỏi này thuộc đề thi trắc nghiệm dưới đây, bấm vào Bắt đầu thi để làm toàn bài
Hướng dẫn Trắc nghiệm Online và Tích lũy điểm thưởng
CÂU HỎI KHÁC
- I think everyone wants to make friends with John. He is _____ honest person.
- If I _______ to him, I wouldn’t have lost my way.
- I declined the offer as I _______ it was time for me to go for a swim in the sea.
- The use of computers aids in teaching, _______ the role of teachers is still very important.
- Jane enjoyed the party, but as____________ Mark, he was simply bored
- _______ of the shop, my friend came in.
- _______ in large quantities in the Middle East, oil became known as black gold because of the large profit it brought.
- We are considering _______ for the coming New Year.
- Peter ______ opened the door of the room, wondering what he might find.
- If it’s raining tomorrow, we shall have to ______ the match till Sunday.
- If you ____ in behaving in this way, you will bring yourself nothing but trouble.
- During the boss’s____________his assistant took over.
- Mai, Lan and Nga are 17, 19, 20 years old ________.
- There’s no _______ in going to school if you’re not willing to learn.
- The tiny irrigation channels were everywhere and along some of them the water was running.
- He was asked to account for his presence at the scene of crime.
- Severe cutbacks in public spending have been announced.
- During the five-decade history, the Asian Games have been holding by in all aspects.
- Thank you for taking the time to come here in person.” _______________”
- Why don’t we go to a baseball game?” __________________”
- The author’s main purpose in this passage is to ___________.
- The phrase this vast amount” in the first paragraph refers to ________ .
- The word outstanding” in paragraph 3 is closest in meaning to _______ .
- According to the passage, fish can survive in the oceans because ________ .
- Which of the following is NOT mentioned as a characteristic of water?
- What is the topic of the passage?
- Why does the author mention a cotton shirt in the first paragraph?
- The word that” in the first paragraph refers to _________.
- The word compelling” in the second paragraph is closest in meaning to ______.
- Which options for non-food GM is NOT mentioned in the passage?
- The word ideal” in paragraph mostly means_________.
- According to the passage, why are researchers developing GM trees?
- It can be inferred from the passage that GM tobacco _________.
- The new technique calls (A) for heat (B) the mixture before applying it (C) to the wood. (D)
- Owing (A) to their superior skills, highly competitive (B) athletes have been known (C) to win contests and break records even when suffered (D) from
- It is time (A) the government helped (B) the unemployment (C) to find some (D) jobs.
- People think that Alexander Fleming discovered penicillin in 1928.
- Would you like some coffee? ” Peter said.
- Although Thomas received a warning for speeding, he still drove so fast.
- He was successful because he was determined to pursue personal goals. He was not talented.
- Overeating is a cause of several deadly diseases. Physical inactivity is another cause of several deadly diseases.
