单选题：Most of the dreadful eruptions of Mount Saint Helens took pl

题目内容：

Most of the dreadful eruptions of Mount Saint Helens took place in early May. A．Right
B．Wrong
C．Not mentioned

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答案解析：

Mau learnt navigation skills from his grandfather.

Mau learnt navigation skills from his grandfather.A．Right B．Wrong C．Not mentione

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They agreed to modify their policy.A．clarify B．change C．define D．develop

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