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埃迪卡拉动物群出现于前寒武纪末期。()

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What does the passage suggest to people when they are not living in a country where the language is spoken?

A. They go to movies, watch TV, and read newspaper and magazines.
B. They make friends who speak the language.
C. They make to class.
D. They study grammar and vocabulary.

水体的PH值越低有利于保存化石。()
参考答案:错误

史称“草圣”的是()。

A. 怀素
B. 张旭
C. 张芝
D. 王献之

水流湍急的环境比静水环境更有利于保存化石。()
参考答案:错误

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