The seats are ________hard ________I fee_爱下问搜题

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问题选择题

The seats are ________hard ________I feel uncomfortable. [ ]

A. too; to

B. so; that

C. enough; to

D. too; that

答案

B

选择题

Had I mastered the statistic technique, a large amount of time and, energy .

A．was avid

B．had been saved

C．will be saved

D．would have been saved

单项选择题

水池液面上升时，水泵入口真空度会（）。

A.下降

B.上升

C.不变