构成附睾头的结构是()
A.输精管
B.附睾管
C.精曲小管
D.睾丸输出小管
E.精直小管
参考答案:D
His walkman is different from , and it is more expensive. [ ]
A. him
B. mine
C. my
D. her
位于耳垂的是()。
A.与上肢相应的耳穴
B.与下肢相应的耳穴
C.与头面相应的耳穴
D.与内脏相应的耳穴
E.与向躯干相应的耳穴