题目内容

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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    Professor Yassa says pills with a little more caffene also increased memory，but resulted  in some participants appearing more nervous．

61．From the passage，we can learn that caffeineD．
A．Can be found in every plant  
B．can improve people's health
C．is contained only in coffee    
D．can help people think clearly
62．What does Paragraph 3 mainly discuss？A
A．How MichaeI Yassa does his research．
B．Why Michael Yassa does the research．
C．What the result of Michael Yassa research is．   
D．How many people participate in the research．
63．Which of the following statements about the experiment is true？D
A．The participants must be addicted to coffee．
B．All the pictures seen on the second day were the same．
C．All the participants must drink coffee on the first day．
D．The participants saw three groups of pictures on the second day．
64．What does this text mainly tell us？C
A．Coffeeis essential for people's work．
B．Caffeine has negative effects on our health．
C．Caffeine may help better long-term memory．
D．Caffeine can lead to difficult sleeping and anxiety．
65．The author wrote the text in order toB．
A．forbid people to drink coffee
B．report a new research of coffee
C．attract readers to drink coffee
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46．Natural Burn was adopted because some forest fires wereC 
A．hard to put out
B．started by lightning
C．good for the balance of nature
D．approved by National Park Service
47．The big fire in Yellowstone in 1988D．
  A．became out of control at first
  B．destroyed the park completely
  C．was allowed to burn continuously
  D．brought the natural burn policy to an end
48．Why were so many animals killed in the big fire？D 
  A．Because winds were blown from high places．
  B．Because the animals moved only ten miles a day．
  C．Because the animals lived in lower places．
  D．Because strong winds contributed to the fire a lot．
49．Yellowstone was famous for itsC．
A．rare animals   B．unique plants    C．beautiful scenery  D．little streams
50．The text probably comes fromD．
A．a science fiction    B．a news report
C．a commercial ad      D．a geography magazine．
2．The city of Rome has just passed a new law to prevent cruelty to animals，which many people say can      the civilization of a city．（　　）
A．manageB．separateC．treasureD．measure
15．With the sun    down mercilessly from the clear sky，the traveler felt thirsty and tired out．（　　）
A．glaringB．staringC．glancingD．scanning

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