Why should we elect him _________mayor? I mean last year he was elected as _________ member of the Congress and he has failed to keep any promise he made during the election.

A．a; /

B．the; the

C．a; the

D．/; a

口服短效避孕药，正确的服法为（）。

A.月经前5天起，每晚1片，连服22天

B.月经干净起，每晚1片，连服22天

C.月经第5天起，每晚1片，连服22天

D.月经第7天起，每晚1片，连服22天

E.月经干净后5天起，每晚1片，连服22天