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  3. The main focus of this passage is ______. About how long have sharks lived on the planet?

The main focus of this passage is ______. About how long have sharks lived on the planet?

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问题 The main focus of this passage is ______.
About how long have sharks lived on the planet?
选项 A、25 million years.
B、150 million years.
C、350 million years.
D、500 million years.
答案C
解析 本题考察的是对信息的检索。在第二段中有一句Sharks…having survived in the seas for more than 350 million years．由此可知此题应选答案项。survive意为"生存"。
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考研英语一

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