一切外科疾病的总称是

A． * * 口常有精液溢出
B．排尿困难、尿潴留
C．阴囊肿大偏坠，但无红热，透光试验(+)
D．阴茎背侧触及硬结或索状斑块
E．射精时精液呈淡红色或棕色

When you ______ the book please return it to the library on time.

A．get through

B．get along

C．look through

D．look up