第二部分语言知识及应用（共两节, 满分35分）
第一节：完形填空（共10小题，每小题2分，满分20分）
阅读下面短文，掌握其大意，然后从21—30各题所给的四个选项（A、B、C和D）中，选出最佳选项，并在答题卡上将该项涂黑。
Secondhand smoke clearly kills people and the only way to control it is to ban smoking in all workplaces, US Surgeon-General Dr Richard Carmona said.
In 1964Surgeon General’s report first laid out the  21  of smoking. Years later, in another report Dr Richard Carmona  22  the effects of secondhand smoke and said no one should be forced to inhale it.
“Secondhand smoke causes early death and disease in children and in   23  who do not smoke,” the report reads. “Children   24  to secondhand smoke are at an increased risk for sudden infant death syndrome（综合症）, acute respiratory（呼吸道） infections, and ear problems,” it adds.
Smoking by   25   causes respiratory symptoms and slows lung growth in their children. A 2005 report from the US Centers for Disease Control and Prevention found that 430  26  died every year in the United States from sudden infant death syndrome-all   27  by secondhand smoke.
States,  28  and other local authorities have battled over instituting（制定）smoking bans. Some   29  , especially bars and restaurants, have said they will lose business if smoking is completely banned. But the report said it is impossible to protect non-smokers even with designated smoking areas, and at least one report from California, which has strict bans, has shown no   30  on businesses.
21．A．advantages       B．dangers       C．poisons     D．elements

2,4,6

22．A．neglected     B．gained         C．detailed    D．conquered

23．A．gentlemen     B．mothers       C．youngstersD．adults
24．A．exposed       B．resisted        C．reported    D．invited
25．A．audiences     B．authorities     C．patients     D．parents
26．A．teenagers     B．elders          C．mothers    D．newborns
27．A．obtained      B．created        C．caused      D．abandoned
28．A．countries     B．cities         C．schools     D．businesses
29．A．stores          B．headquarters     C．businesses D．factories
30．A．comment     B．impact         C．attack       D．affect