因为1米等于100厘米，所以长度单位厘米大于米。[ ]
错误
The English are proud of the 30th Olympic Games _____ in London in 2012. [ ]
A. hold
B. being held
C. held
D. to be held
心理卫生保健的关键时期应是（）
A.胚胎期
B.婴儿期
C.幼儿期
D.青少年期
E.中年期
