学龄期的年龄划分()。
A.3~6周岁
B.1~3周岁
C.6~12周岁
D.12~18周岁
E.出生~1周岁
参考答案:C
You must finish ______ your homework before ______ to bed. [ ]
A. to do, to go
B. to do; going
C. doing; to go
D. doing; going
患者,女,44岁,头晕、听力下降3年,CT示听神经瘤。
对该病人术前应何时开始禁食()
A.2h
B.4h
C.6h
D.8h
E.10h