【题目】This is the third time I ______ Beijing. The second time I ______ here was on National Day last year.
A.have visited; came
B.have visited; have come
C.visited; came
D.visited; have come

【答案】A
【解析】句意：这是我第三次参观北京，第二次去是去年国庆节。This is the…time that…句型中主句动词是is，从句动词用现在完成时，故第一空用have visited；第二空根据时间last year用过去时，故选A.