单项选择题
A．the same pay as those doing housework B．as much as their husbands C．an average payment of ＄ 11,600 a year D．more and more money
A．Because people have realized the danger of second-hand smoke. B．Because more and more people don't like smoking now. C．Because parents don't want their children to become smokers. D．Because the government wants to limit the production of cigarettes.
A．how people get cancer B．who can get cancer easily C．what should be done with smoking in public D．whether second-hand smoking can be harmful