下列哪些属于第二性征（）
A.子宫
B.月经
C. * *
D.阴毛
E.腋毛
参考答案：C, D, E
---Do you know when she _________?
---Sorry, I don’t. But I’ll let you know when she _________.
A．comes, comes
B．comes, will come
C．will come, will come
D．will come, comes
于扰叶酸代谢而起作用的药物：
A．乙胺嘧啶
B．磺胺类
C．氨苯砜
D．甲氧苄啶
E．甲氨蝶呤
