引起霍乱流行的传播途径主要是
A．不洁食物
B．生活接触
C．水源污染
D．苍蝇媒介
E．被污染的冷冻食品
参考答案：C
—What is the result of the survey?
—15% of those surveyed worry that in the long term children ________ be more dependent on their parents, which does no good to them.
A．should
B．can
C．may
D．shall
属于贵药的药材为（）
A．山茱萸
B．吴茱萸
C．重楼
D．罗汉果
E．蛤蟆油
