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单选题

A．When the Earth was formed.
B．The composition of the Earth's interior.
C．Why molten rock is hot.
D．How often a volcano is likely to erupt.

参考答案B

解析: What did the study of vibrations caused by earthquakes help geologists learn more about?
【解题思路】四个选项差别较大，每项均表示某一方面的内容，注意抓住每个选项的中心词form、composition、hot和erupt，这是听音的关键。
【解析】本题考查震波对地质学家的帮助。B项the composition of the Earth，s interior是对听力短文中the inner parts of the earth的同义转述，因此答案为B。

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A．How deep they are.
B．Where earthquakes form.
C．How hot they are.
D．What purpose they serve.

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A．Political values of a people.
B．People's religious beliefs.
C．Culture differences.
D．Politics, economics and war.

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单选题

A．A soldier's survival from wars.
B．The shooting at a number of painters.
C．Soldiers shooting a group of simple people.
D．Francisco Goya' s interesting experiences in Spain.

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