属于氨基甲酸酯类镇静催眠药（）
A.苯巴比妥
B.氯丙嗪
C.甲丙氨酯
D.苯妥英钠
E.安定
参考答案：C
This maths problem is so difficult that only _____students can work it out.
A a few B few C a little D little
“贿选宪法”
