The earthquake _____Japan on March 11 was so strong that it caused many deaths and losses. [ ]

A. to attack

B. that attacked

C. being attacked

D. attacking

当闸底砍为实用堰时，e/H为（）时为堰流。

A.e/H＞0.75

B.e/H＞0.65

C.e/H≤0.75

D.e/H≤0.65