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The book is a ______ for students of science.A、necessaryB、mustC、importantD、us
The book is a ______ for students of science.A、necessaryB、mustC、importantD、us
游客
2023-09-28
81
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问题
The book is a ______ for students of science.
选项
A、necessary
B、must
C、important
D、useful
答案
B
解析
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