下列哪项不属于外生殖器：（）
A.阴阜
B.巴氏腺
C.处女膜
D. * *
E. * * 前庭
参考答案：D
找错并改错。
( ) 1. She hasn't heard a letter from her friend for a long time.
A B C D
( ) 2. I don't know why Kate hasn't replied my letter for half a month.
( ) 3. While feeling sad, I can't decide who to talk.
( ) 4. Look, there are someone painting the wall in the fitting room.
( )5. Everyone of us considers Tom the cleverest boy in our class.
某类污水污染物类型为1，需预测其浓度的水质参数为6，这类污水水质程度属于( )。
A．复杂
B．中等
C．简单
D．一般
