Speaker:a student;Hearer: a set ofstudents;Place:sitting around a coffee table in the refectory. John, one ofthe group,has just told a joke.Everyone laughs except Adam. Then Adam laughs. One of the students says: I do think Adam's quick .
The word quick in the above context means“____”
A、slow
B、backward
C、quick to understand
D、quick in developing
【正确答案】：A
