— Hi, Lydia. Are you going to the concert on Friday?

— I'd like to. But there are so many problems_______.[ ]

A. remaining to be settled

B. remained settling

C. remaining to settle

D. remained to be settled

下列哪个症状不是肠梗阻的典型临床表现（）

A.腹痛

B.腹胀

C.呕吐

D.腹泻

E.肠鸣音亢进或消失