.

They thought about it for a long time, but still couldn’t ________ a solution.

A．come over

B．got along with

C．came out

D．come up with

行 * * 内器械检查时哪一部位易损伤（）

A.阴茎头部 * *

B.悬垂部 * *

C.球部 * *

D.前列腺部 * *

E.膜部 * *