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    13．With the crazy smog going on in China，businessmen are now ready to grope for your wallet．"Smog economy"is stimulating a shopping spree on certain products against the terrible weather．Now let's see what we have on the list to help us through the crisis．
    1．Masks
    Well，I would say you had better stay indoors to save your lives．PM 2.5 just surged up to 750 in Beijing recently.3M just sold 220，000 masks of a kind．No.1 best-selling products!
    2．Air purifiers
    This kind of products is rarely seen in Chinese households in the past．They have become a necessity now．I do like these little gadgets，but they are just too expensive．
    3．Oxygen inhalers
    I didn't realize oxygen inhalers also get a cut in the smog economy．As a matter of fact，your oxygen uptake has nothing to with relieving （减轻） the impact of smog．It might even lead to oxygen poisoning when you inhale too much oxygen．So don't get greedy．
    4．Salt lamps
    Compared to oxygen inhalers，salt lamps are even worse．Some stores are selling the products at several hundred yuan，saying that they can release negative ions（离子），reduce radiation levels and purify the air．The lamps mainly contain sodium chloride．The boiling point of sodium is about 800 degrees centigrade and that of candle is 500．So how on earth can negative ions be released at only 500 degrees？
    5．Plants that absorb smog
    Yeah，right．Plants Vs Smog．It is scientifically justified （证明） that some plants do absorb pollutants from the air．Money plants and calla lilies are among the best-sellers in the market．Even if they don't work，it's good to have some plants in the house anyway．

    43．According to the passage，smogA．
    A．give some economic chances to businessmen
    B．is very bad to economy
    C．makes some crisis come out
    D．have nothing to do with the economy
    44．What is the meaning of the underlined word？D
    A．Giving up shopping
    B．Feeling down in shopping．
    C．Having a lot to buy
    D．Buying something enthusiastically．
    45．Salt lamps are useless，becauseB．
    A．it may cause poisoning
    B．it actually can't release the negative ions
    C．it reduces radiation level and makes the air dirty
    D．the prize is very high
    46．How many ways does the author think are useful？B
    A.2．B.3．C.4．D.5．

    分析 本文属于说明文阅读，作者通过这篇文章向我们介绍了雾霾天气给人们的健康造成危害，然而却给商家带来机会，作者例举了一些和大雾有关的产品，并一一说明它们的功能，以及是否真的对雾霾有用．

    解答 43．A  细节理解题：根据文章第一段With the crazy smog going on in China，businessmen are now ready to grope for your wallet．可知大雾给商人带来了盈利的机会，故选A．
    44．D  词义猜测题：根据第一段Smog economy"is stimulating a shopping spree on certain products against the terrible weather．可知"大雾经济"激发了人们的购买热情，由此可推知"spree"的意思是"热情的购买东西"，故选D．
    45．B  细节理解题：根据第五段So how on earth can negative ions be released at only 500 degrees？可知盐灯对我们是没有用的，因为它实际上并不能释放负离子，故选B．
    46．B  细节理解题：通读全文可知作者认为口罩，空气净化器，和植物都是能够对大雾有用的，所以一共是3种，故选B．

    点评 考查学生的细节理解和推理判断能力．做细节理解题时一定要找到文章中的原句，和题干进行比较，再做出正确选择．在做推理判断题时不要以个人的主观想象代替文章的事实，要根据文章事实进行合乎逻辑的推理判断．

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