男性不育症的主要原因，但除了（）
A.泌尿系统感染
B.生殖系统感染
C.使用抗代谢药物
D.内分泌系统感染
E.精索静脉曲张
参考答案：A, D
E-mail, as well as telephones, _____ an important part in daily communication. [ ]
A. is being played
B. are playing
C. have played
D. is playing
某公司“盈余公积”科目的年初余额为100万元，本期提取120万元，转增资本60万元，该公司“盈余公积”科目的年末余额为( )万元。
A．100
B．160
C．220
D．280
