两道GWD不是很理解，请高人指点!

 If the shipping clerk’s statements are true, which of the following must also be true?

选E，只是我觉得A也挺好的，请哪位牛人可以帮忙一一分解？成分感谢，
                    

A.      At least one of the shipments sent to Truax Construction last week was specially ordered.

B.       At least one of last week’s specially ordered shipments did not consist of building supplies.

C.       At least one of the shipments sent to Truax Construction was not sent out on Thursday of last week.

D.      At least one of the shipments that were sent out on Friday of last week was sent to Truax Construction.

E.       At least one of the shipments sent to Truax Construction last week was sent out before Friday.

In one state, all cities and most towns have antismoking ordinances.  A petition entitled “Petition for Statewide Smoking Restriction” is being circulated to voters by campaign workers who ask only, “Do you want to sign a petition for statewide smoking restriction?”  The petition advocates a state law banning smoking in most retail establishments and in government offices that are open to the public.

 Which of the following circumstances would make the petition as circulated misleading to voters who understand the proposal as extending the local ordinances statewide?

还是选E，但是不明白是为什么，我选的是C，不知道是不是我理解问题。请高人指点一下，万分感谢

A.      Health costs associated with smoking cause health insurance premiums to rise for everyone and so affect nonsmokers.

B.       In rural areas of the state, there are relatively few retail establishments and government offices that are open to the public.

C.       The state law would supersede the local antismoking ordinances, which contain stronger bans than the state law does.

D.      There is considerable sentiment among voters in most areas of the state for restriction of smoking.

E.       The state law would not affect existing local ordinances banning smoking in places where the fire authorities have determined that smoking would constitute a fire hazard.

我选的也是B，但是答案确实是E，所以我很奇怪！！

能不能帮我讲讲第一题呢？