13． --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

60年代后，存在主义文学的影响未曾渗透到（）文学流派中。

A.“意识流”

B.“黑色幽默”

C.“新小说”

D.“荒诞派戏剧”