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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 question from 18 to 25.
The principle of use and disuse states that those parts of organisms' bodies that are used grown 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 dimish. By examining a man's body, we can tell which muscles he uses and which he doesn't. We may even be able to guess his profession or his reaction. 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 and rickets. 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.
Câu hỏi:What does the passage mainly discuss?
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A.
How the principles of use and disuse change people’s concepts of themselves.
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B.
The changes that occur according to the principle of use and disuse.
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C.
The way in which people change themselves to conform to fashion.
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D.
The effects of the sun on the principle of use and disuse.
Lời giải tham khảo:
Đáp án đúng: B
Đáp án B.
Key word: the passage, mainly discuss.
Phân tích đáp án:
A. How the principles of use and disuse change people's concepts of themselves: Cách những quy luật về dùng và không dùng làm thay đổi khái niệm của con người về chính họ.
B. The changes that occur according to the principle of use and disuse: Những thay đổi tùy theo quy luật dùng và không dùng - Nội dung xuyên suốt bài (những thay dổi của người tập thể hình/của da người tùy theo điều kiện nắng...)
C. The way in which people change themselves to conform to fashion: Cách mà người ta thay đổi để chạy theo thời trang – Chỉ là một nội dung nhò.
D. The effects of the sun on the principle of use and disuse: những ảnh hưởng của ánh nắng lên quy luật dùng và không dùng - Hoàn toàn sai.
Đáp án chính xác là B.
Hãy trả lời câu hỏi trước khi xem đáp án và lời giải -
A.
Câu hỏi này thuộc đề thi trắc nghiệm dưới đây, bấm vào Bắt đầu thi để làm toàn bài
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