质量单位正确的是()。
A、斤
B、千克
C、克
D、KG
参考答案:B, C
-Sixteen-year-olds should _____ to drive.
-I agree. They aren't serious enough at that age. [ ]
A. not be allowed
B. be allowed
C. not be allow
D. be allow
影响外阴癌预后的主要因素有()
A.肿瘤侵犯范围
B.年龄
C.一般身体状况
D.体重
E.是否绝经