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　　1.单选题

　　[阅读选择]As far as astronomers(天文学家) can determine， the entire universe is built of the same matter. They have no reason to doubt that matter obeys the same laws in every part of the universe. Therefore， it is reasonable to guess that other stars， with their own planets， were born in the same way as our own solar system. What we know of life on earth suggests that life will arise wherever the proper conditions exist.

　　Astronomers believe that matter in different parts of the universe

　　A、obeys different laws.

　　B、obeys one common law.

　　C、obeys the same laws.

　　D、obeys no common law.

　　正确答案：C

　　答案解析：答题依据在本段的第二句。科学家没有理由怀疑宇宙中的物质遵循同一法则，即他们相信宇宙中不同地方的物质是遵循同一法则的。

　　2.单选题

　　[阅读选择]Organisms have a great variety of ways of adapting. They may adapt in their structure， function and genetics， in their development and production of the young and in other respects. An organism may create its own environment， as do warm-blooded mammals， which have the ability to adjust body heat exactly to maintain their ideal temperature despite changing weather.

　　Usually adaptations are an advantage， but sometimes an organism is so well adapted to a particular environment that， if conditions change， it finds it difficult or impossible to readapt to the new conditions.

　　The author cites the behavior of warm-blooded mammals in order to show that a living thing may have the ability______.

　　A、to create an environment of its own

　　B、to remain still when an enemy is near

　　C、to make food from inorganic chemicals

　　D、to change the color of its skin

　　正确答案：A

　　答案解析：作者举例，证明观点;例子不需要看懂，关键要看论据;一般论点在前(前一句或段落首句)，论据在后。

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