Look, Tom ____________ in the river.[ ]_爱下问搜题

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问题选择题

Look, Tom ____________ in the river.[ ]

A. is swimming

B. was swimming

C. swims

D. swimming

答案

答案：A

选择题

I found _____ impossible for_____ to work out the maths problem.

A. if, he
B. that, he
C. that, him
D. it, him

单项选择题

图示结构在均布荷载作用下的M图如习题图11-40所示，则其在上述荷载作用下截面C的转角θ_C=（）。

A.

B.

C.

D.