—Do you think English should be removed from the Chinese gaokao?

—______. On the contrary, greater importance should be attached to it in this national test.

A．I can’t agree with you more

B．So much the better

C．Not really

D．That’s all right

当机械波在介质中传播时，一介质元的最大形变发生在（）。

A.介质质元离开其平衡位置的最大位移处

B.介质质元离开平衡位置-A／2处

C.介质元在其平衡位置处

D.介质元离开平衡位置A／2处