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Câu hỏi:

23/07/2024 2,821

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 36 to 42.

The principle of use and disuse states that those parts of organisms’ bodies that are used grow larger. Those parts that are not tend to wither away. It is an observed fact that when you exercise particular muscles, they grow. Those that are never used diminish. By examining a man’s body, we can tell which muscles he uses and which he does not. We may even be able to guess his profession or his recreation. Enthusiasts of the ‘body-building’ cult make use of the principle of use and disuse to ‘build’ their bodies, almost like a piece of sculpture, into whatever unnatural shape is demanded by fashion in this peculiar minority culture. Muscles are not the only parts of the body that respond to use in this kind of way. Walk barefoot and you acquire harder skin on your soles. It is easy to tell a farmer from a bank teller by looking at their hands alone. The farmer’s hands are horny, hardened by long exposure to rough work. The teller’s hands are relatively soft.

The principle of use and disuse enables animals to become better at the job of surviving in their world, progressively better during their lifetime as a result of living in that world. Humans, through direct exposure to sunlight, or lack of it, develop a skin color which equips them better to survive in the particular local conditions. Too much sunlight is dangerous. Enthusiastic sunbathers with very fair skins are susceptible to skin cancer. Too little sunlight, on the other hand, leads to vitamin-D deficiency. The brown pigment melanin which is synthesized under the influence of sunlight, makes a screen to protect the underlying tissues from the harmful effects of further sunlight. If a suntanned person moves to a less sunny climate, the melanin disappears, and the body is able to benefit from what little sun there is. This can be represented as an instance of the principle of use and disuse: skin goes brown when it is “used’, and fades to white when it is not.

What does the passage mainly discuss?

A. How the principles of use and disuse change people’s concepts of themselves. 

B. The way in which people change themselves to conform to fashion 

C. The changes that occur according to the principle of use and disuse. 

Đáp án chính xác

D. The effects of the sun on the principle of use and disuse

Trả lời:

verified Giải bởi Vietjack

Đáp án C

Đoạn văn chủ yếu thảo luận là gì?

A. Cách các nguyên tắc sử dụng và không sử dụng đã thay đổi các khái niệm của con người về bản thân họ.

B. Cách thức mà mọi người thay đổi chính mình để phù hợp với thời trang

C. Những thay đổi xảy ra theo nguyên tắc sử dụng và không sử dụng.

D. Những ảnh hưởng của mặt trời với nguyên tắc sử dụng và không sử dụng

Câu trả lời này có hữu ích không?

0

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