A big earthquake 7.1 on the Richter scale struck Yushu, knocking down buildings and causing more than two thousands people to lose their lives．
A. measured
B. measuring
C. to be measured
D. measures
网友回答
A. measured
(答案→)B. measuring
C. to be measured
D. measures
解析：考查非谓语动词。measure“测量”，earthquake和measure是主谓关系，故用主动形式；相当于定语从句which measured。故选B。