18．Recently more and more big cities in China are having heavy smog （霧霾）．There is a popular joke about it on the Internet，"The longest distance in the world is not between life and death，but between you and me when I hold your hand in the street but cannot see your face．"
　　Air pollution is one of the causes of lung （肺） cancer．What shall we do to keep healthy in this situation？Try to remember the following advice：
▲Reduce outdoor activities．
▲If you have to go outside，remember to wear a mask．
▲Drink more water a day and have fresh food．
▲Wash hands and face after outdoor activities．
▲Keep indoor environment clean．
46．The underlined word"mask"means"C"in Chinese．
A．帽子
B．手套
C．口罩
47．What is one of the causes of lung cancer according to this article？C
A．Smoking．
B．Drinking．
C．Air pollution．
48．The writer advises people to reduce outdoor activities becauseA．
A．heavy smog is bad for health
B．outdoor activities are too boring
C．they don't want to go out
49．The writer thinks we shouldCevery day in order to keep healthy．
A．drink enough water
B．have fresh food
C．both A and B
50．Which statement is TRUE according to the passage？C
A．Air pollution can make people blind．
B．We'd better wash hands and face before going outside．
C．We should stay indoor as much as possible．

分析 文章大意：這是一篇說明文，主要介紹最近中國越來越多的大城市在遭受煙霧污染．空氣污染是肺癌的原因之一，在這種情況下，我們應(yīng)該減少戶外活動．如果你要外出，記得戴口罩．每天喝更多的水，吃新鮮的食物．戶外活動后洗手、洗臉．保持室內(nèi)環(huán)境清潔．

解答 46．答案：C．詞意猜測題．根據(jù)第一句Recently more and more big cities in China are having heavy smog最近中國越來越多的大城市在遭受煙霧污染．可知，應(yīng)該是外出要戴口罩，選C．
47．答案：C．細(xì)節(jié)理解題．根據(jù)第二段第一句Air pollution is one of the causes of lung （肺） cancer．空氣污染是肺癌的原因之一．可知，空氣污染是肺癌的原因之一．選C．
48．答案：A．細(xì)節(jié)理解題．根據(jù)第二段What shall we do to keep healthy in this situation？Try to remember the following advice：在這種情況下我們應(yīng)該怎樣保持健康？試著記住以下建議：可知，減少外出是因為霧霾對身體有害．選A．
49．答案：C．細(xì)節(jié)理解題．根據(jù)倒數(shù)第三行Drink more water a day and have fresh food．每天多喝水，吃新鮮食物．可知，保持健康要多喝水和吃新鮮蔬菜．A，B都正確，選C．
50．答案：C．推理判斷題．根據(jù)第四行Reduce outdoor activities．減少戶外活動．可知，C選項"我們應(yīng)該盡可能多地呆在室內(nèi)．"是正確的．選C．

點評 閱讀題型，要注重句子與句子之間、段落與段落之間邏輯關(guān)系以及對篇章的整體理解．根據(jù)所給問題選擇正確選項完成試題．

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