单项选择题
A．help people develop physically and psychologically B．make people feel sick C．cause people to be in the habit of taking them D．cause serious diseases
The word "high" means （）A．large amountB．drunkC．seriousn...
单项选择题The word "high" means （）
A．large amount B．drunk C．seriousness D．the top
28（）A．about a dayB．for an hourC．afternoonD．years
单项选择题28（）
A．about a day B．for an hour C．afternoon D．years
29（）A．eastB．westC．southD．north
单项选择题29（）
A．east B．west C．south D．north
