问题
How amazing it is that astronauts are exploring outer space!-It’s a challenge, I guess, _____ man against nature.[ ]
A: of
B: for
C: by
D: about
B: for
C: by
D: about
正确答案是：
同类题型
Everything is packed, and we ______ leave.
We all want to know who can________the physics problemYou know，it’s very difficult．
I didn’ t expect to see you studying at the library so early in the morning.—________, right
You have discussed for an hour! Have you decided ________
Are you still a teacher? —- No, I____ in Harbin No3 High School for five years