搜题
王老师:19139051760(拨打)
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第1题

A formal report has two main divisions: preliminary parts and body.
A.正确
B.错误
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第2题

A friendship letter must have supporting information.
A.正确
B.错误
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第3题

A hypothesis is a possible cause or explanation for a problem.
A.正确
B.错误
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第4题

A hypothesis is a possible explanation of a problem.
A.正确
B.错误
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