紧急避孕药物，只是临时的补救措施，最好（）。
参考答案：少用或不用
—What do you want to be in the future, Nick?
—I want to be _____ pilot. It is _____ exciting job. [ ]
A. a; a
B. a; an
C. the; an
D. a; the
腊茶丸功效与作用
