Withthe 61 (develop)ofindustry,airpollutionisgettin...
问题详情:
With the 61 (develop) of industry, air pollution is getting more and more serious. In Beijing, many people suffer different kinds of illnesses because 62 air pollution. Air pollution is caused by the 63 (follow ) reasons: about half of the problem is caused by vehicles. There are more and more cars, buses on the roads, and they give off 64 (poison) gases. 25% of air pollution is caused by factories. Another factor is the smokers. Smoking not only does harm to their health but to others. 65 these, about 10% of air pollution is caused by other reasons. We 66 take some measures to fight 67 pollution. New fuel can be used to take 68 place of gas. We can also plant more trees. If everybody realizes the 69 (important) of environment and does something to stop pollution, the problem will 70 (solve).
【回答】
lopment 63. following 64.poisonous des
ld/must nst rtance solved
知识点:阅读填空
题型:阅读填空
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设复数(是虚数单位),则复数的虚部为( )A. B. C. ...
问题详情:设复数(是虚数单位),则复数的虚部为( )A. B. C. D.【回答】B知识点:数系的扩充与复数的引入题型:选择题...
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蜡烛燃烧刚熄灭时产生的白*是什么?提出问题:蜡烛刚熄灭时,总会有一缕白*冒出,它的成分是什么呢?猜想与假设:A...
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根据句意及首字母,写出单词,使句子意思完整1.Mym________birthdayisDecember13t...
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下列与实验相关的叙述正确的是 A.稀释浓硫*时,应将蒸馏水沿烧杯内壁缓慢地注入浓硫*中B.配制溶液时,若加水...
问题详情:下列与实验相关的叙述正确的是 A.稀释浓硫*时,应将蒸馏水沿烧杯内壁缓慢地注入浓硫*中B.配制溶液时,若加水超过容量瓶刻度,应用胶头滴管将多余溶液吸出C.配制1mol·L-1300mLNaCl溶液可以选择一个50mL的容量瓶和一个250mL的容量瓶D.可以用右图装置进行*气的...
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