我们之所以能长大，是因为（ ）
A．细胞分裂
B．细胞生长
C．细胞分裂和生长
D．都不是
答案：C
As a young man , he’d rather have a room of his own, however small it is, than __ a room with someone else．
A．to share
B．to have shared
C．share
D．sharing
单侧隐睾手术治疗应在（）
A.2岁以前
B.3～6岁
C.7～10岁
D.青春期
E.婚后影响生育时
