2. 外语
  3. Smoking is very popular with people.【C1】______ of the smokers believe that smoking can【C2】______ their nerves hardened with soci

Smoking is very popular with people.【C1】______ of the smokers believe that smoking can【C2】______ their nerves hardened with soci

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问题     Smoking is very popular with people.【C1】______ of the smokers believe that smoking can【C2】______ their nerves hardened with social【C3】______ . Others are【C4】______ its stimulating effects. Blat they never think of the effects it【C5】______ have on other people’s health【C6】______ on their own health. Cigarettes contain nicotine, a poisonous【C7】______ that has the effect of causing cancer, a dreadful and【C8】______ disease.【C9】______ that more than 90% of lung cancer【C10】______ are smokers. But if people【C11】______ from smoking, the threat of 【C12】______ will be greatly diminished.
   【C13】______ , government authorities should【C14】______ an early campaign to educate people on the danger of smoking. The campaign should be【C15】______ by the Medicine and Health Department.
   【C16】______ of the effects of smoking should be channeled【C17】______ some organizations so that the people could learn the danger of the habit.
    The government should【C18】______ a law to prosecute smokers found smoking in public places.
    It【C19】______ be good news for many people if smokers could be induced to stop smoking. That is, a ban on smoking should be【C19】______ .
【C9】
选项 A、It estimates
B、It is estimated
C、It confirms
D、It is confirmed
答案B
解析 这里表达的是一种推测和估计，所以应选固定结构it is estimated。A、C两项不符合语法，D项表示“据证实”，用在这里不合文意。
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