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问题 单项选择题

白炭黑的补强效果随不同的橡胶而异。（）

A.对极性橡胶的补强作用比非极性橡胶的大

B.对极性橡胶的补强作用比非极性橡胶的小

C.对极性橡胶的补强作用与非极性橡胶的相同

D.以上说法均不对

答案

参考答案：A

填空题

从方框中选择恰当的词，并用其正确形式填空。(5分)

小题1:I am in Grade Seven. February 8th is my_______________ birthday.

小题2:There are three_______________ on the table.

小题3:Jack likes old music because it _______________ relaxing.

小题4:My book is not here. It’s_______________book.

小题5:Our geography teacher is_______________.
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选择题

Nearby _____ in which they had spent their summer vacation. [ ]

A. was two houses

B. two houses were

C. were two houses

D. are two houses

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