题目内容

16．The cold weather，which has ______  to the serious air pollution in Beijing，is reported to stop later this week．（　　）
A．appliedB．contributedC．submittedD．referred

分析 寒冷的天气，加剧了北京严重的空气污染，据报道将于本周晚些时候结束．

解答 答案：B
A．运用；申请； B．促成；投稿；C． 使服从；主张；呈递；D．涉及；委托；根据句意可知，此处表达的意思应是：寒冷的天气促进了北京严重的空气污染；故选B

点评 做本题时，首先从句意着手，看懂句意是解答此类题目的关键；其次对四个选项的意思也要了如指掌．这就要求在平时的学习中要勤积累，多记忆，多查字典．

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3．Oxygen inhalers
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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？
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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．

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