One reason Crystal has become so famous is that he is very quick thinking, and is often a

One reason Crystal has become so famous is that he is very quick thinking, and is often able to new jokes about the people and things around him.
A. come up with
B. come across
C. come up
D. come to

(答案→)A. come up withB. come acrossC. come upD. come to解析：考查短语辨析。A. come up with想出；B. come across偶然遇到；C. come up发生；D. come to到达。句意：Crystal变得如此出名的原因之一是他的迅速思维，并常常能够想出他周围人和事的新的笑话。故A正确。

和我的回答一样，看来我也对了