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Câu hỏi:

14/07/2024 522

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 31 to 35

      Nanotechnology is the creation and use of materials or devices at extremely small scales. These materials or devices fall in the range of 1 to 100 nanometers (nm). One nm is equal to one-billionth of a meter (.000000001 m), which is about 50,000 times smaller than the diameter of a human hair. Scientists refer to the dimensional range of 1 to 100 nm as the nanoscale, and materials at this scale are called nanocrystals or nanomaterials.

    The nanoscale is unique because nothing solid can be made any smaller. It is also unique because many of the mechanisms of the biological and physical world operate on length scales from 0.1 to 100 nm. At these dimensions materials exhibit different physical properties; thus scientists expect that many novel effects at the nanoscale will be discovered and used for breakthrough technologies.

    A number of important breakthroughs have already occurred in nanotechnology. These developments are found in products used throughout the world. Some examples are catalytic converters in automobiles that help remove air pollutants, devices in computers that read from and write to the hard disk, certain sunscreens and cosmetics that transparently block harmful radiation from the Sun, and special coatings for sports clothes and gear that help improve the gear and possibly enhance the athlete’s performance. Still, many scientists, engineers, and technologists believe they have only scratched the surface of nanotechnology’s potential.

    Nanotechnology is in its infancy, and no one can predict with accuracy what will result from the full flowering of the field over the next several decades. Many scientists believe it can be said with confidence, however, that nanotechnology will have a major impact on medicine and health care; energy production and conservation; environmental cleanup and protection; electronics, computers, and sensors; and world security and defense.

(Adapted from: Encarta DVD 2009)

The word novelis closest in meaning to ________ .

A. causing a chemical reaction to happen faster

B. being different from anything known before

Đáp án chính xác

C. being important enough to be noticed

D. being the only one of its kind

Trả lời:

verified Giải bởi Vietjack

Đáp án B

Từ “novel” gần nghĩa nhất với _______.

Dựa vào vị trí của từ trong đoạn văn, từ “novel” ở đây là một tính từ.

At these dimensions materials exhibit different physical properties; thus scientists expect that many novel effects at the nanoscale will be discovered and used for breakthrough technologies.”

Tạm dịch: Ở kích thước này, vật liệu thể hiện các tính chất vật lý khác thường; vì vậy các nhà khoa học mong đợi rằng nhiều hiệu ứng “novel” ở cấp độ nano sẽ được khám phá ra và được sự dụng cho các công nghệ mang tính đột phá.

“novel”: mới, khác với những gì đã từng được biết

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CÂU HỎI HOT CÙNG CHỦ ĐỀ

Câu 1:

Mark the letter A, B, C, or D on your answer sheet to indicate the sentence that is closest in meaning to each of the following questions

This is the first time we have been to the circus.

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Câu 2:

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions

This house is going  ________ by my mother

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Câu 3:

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions

I didn’t get a job ________ I had all the necessary qualifications

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Câu 4:

Mark the letter A, B, C, or D on your answer sheet to indicate the sentence that is closest in meaning to each of the following questions

It isn’t necessary for you to finish the report by Sunday

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Câu 5:

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions

The scientists are encountering the difficulties of _____ of radioactive waste.

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Câu 6:

Mark the letter A, B, C, or D on your answer sheet to Indicate the word(s) OPPOSITE in meaning to the underlined word(s) In each of the following questions

I didn’t tell her that he was sick because I didn’t want to cause her any alarm

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Câu 7:

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions

He has always been highly ________ in his work

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Câu 8:

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions

If you want to take part in volunteer organizations, you will have to ________ an application form

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Câu 9:

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

Jessie looked so (A) frightened (B) when she (C) was in that white costume (D) with long black hair

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Câu 10:

Mark the letter A, 8, C, or D on your answer sheet to indicate the sentence that best completes each of the following exchanges

Ben is talking to a school staff at the registration office.

Ben: “I would like to register for a class today.”

Staff: “________”

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Câu 11:

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions

The headmaster is the most popular figure at our school, ________

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Câu 12:

Mark the letter A, 8, C, or D on your answer sheet to indicate the sentence that best completes each of the following exchanges

Thanh and Nadia have just listened to Lan’s song.

Thanh: “Lan’s the best singer in our school.”                      

Nadia: “______.I really love her beautiful voice.”

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Câu 13:

Read the following passage and mark the letter A, B, C or D on your answer sheet indicate the correct word or phrase that best fits each of the numbered Weeks from 26 to 30

More and more routine, repetitive assembly tasks will be taken over by machines. But as certain jobs disappear, new ones open up in (26) _____ parts of the factory. Germany in many ways exemplifies this trend. Today, German manufacturers deploy three times more robots than U.S. companies, (27) ______ they also still employ more humans. Relative to the size of our economies, German’s manufacturing workforce is twice the size of America’s.

From its very beginning, the fourth Industrial revolution has never (28) ________ manufacturers with an either - or choice - robots or humans. It has always been about combining the talents of both. Ultimately, it is the convergence of artificial and human intelligence (29) _____ will enable manufacturers to achieve a new era of speed, flexibility, efficiency and connectivity in the 21st century. Machines have the ability to assemble things faster than any human ever could, but humans possess the domain expertise and (30) ______ knowledge required to solve problems and optimize factory floor production.

(Adapted from: http://time.com/4940374/joe-kaeser-siemens-robots-jobs/)

Điền vào ô số 27

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Câu 14:

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions

I just couldn’t remember her name even though it was on the ______ of my tongue. 

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Câu 15:

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions

I will have completed my first two years’ study at university ________

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