引起包茎的常见原因不包括（）
A.先天性包皮口狭窄
B.包皮炎症
C.包皮过长并狭窄
D.包皮外伤后粘连
E.阴茎癌
参考答案：E
Among all the DVDs ______ the Sound of Music, ______ you are looking forward to.
A． is included, the one
B． are included, that
C． includes, the one
D． is included, that
艾滋病的病原学特点是
A．对紫外线敏感
B．耐热
C．其基因组有两条正链RNA
D．分HIV-1、HIV-2、HIV-3三型
E．单链RNA病毒
