单项选择题
A．The box fell down and hit the man on the head. B．The box continued to go up. C．The man went up to the top of the building. D．The man fell down and broke his legs.
（） should involve in the campaign to deal with the subs...
单项选择题（） should involve in the campaign to deal with the substance abuse among youth.
A．Schools B．Local, state and national government C．Family and community D．All of the above
30（）A．inB．onC．ofD．from
单项选择题30（）
A．in B．on C．of D．from
Food packages, bottles and tins for drinks can cause （）...
单项选择题Food packages, bottles and tins for drinks can cause （）
A．air pllution B．both the litter problem and waste of resources C．excess consumption D．unnecessary buying
