It was on March 11 a strong earthquake hit Sendai Japan.A. whenB. thatC. whichD. ho

问题补充：

It was on March 11, a strong earthquake hit Sendai, Japan.

A. when

B. that

C. which

D. how

答案：

A. when

(答案→)B. that

C. which

D. how

解析：考查强调句：句意：就是在3月11日在日本的仙台发生强烈地震。强调句的结构是：it is/was+强调部分+that+其余部分，判断是否是强调句的方法是;去掉强调结构，如果这句话仍然成立就是强调句，这题如果去掉强调句是：A strong earthquake hit Sendai, Japan on March 11,。所以是强调句，选B。