They’re looking forward_____ the coming of New Year’s Day.

A．to visiting

B．to visit

C．to having visited

D．visiting

霍乱的典型表现是（）

A.黏液脓血便

B.四肢抽搐，顽固性呕吐

C.皮肤黏膜出血点

D.发热，盗汗

E.腹泻，呕吐