earthquake in Japan on March 11th is great shock not only to the Japanese people b

问题补充：

earthquake in Japan on March 11th, is great shock not only to the Japanese people but also to people all over the world.

A. The; the

B. The; a

C. An; a

D. An; the

答案：

A. The; the

(答案→)B. The; a

C. An; a

D. An; the

解析：冠词用法。 3月11日的日本地震，特指，所以是the earthquake。比如the BeiJing Olympic Games 。a shock 指一件令人震惊的事情。抽象名词具体化。