题目内容
11.People and the sources of air pollution are found in the same places.This means that cities with large populations have the biggest problem of dirty air.Air pollution is caused by many different things.A major source of air pollution is the gas fumes (烟雾) from cars.Statistics show that 93percent of all auto trips are within cities.Another major source of dirty is the burning of coal and oil for energy.This energy is needed to make electricity.Of course,much more electricity is used in the city than in the countryside.On the average,we throw away more trash and garbage than the year before.The burning of garbage contributes to air pollution.Many major industries are also responsible for the dirty air in the around cities.The fumes from iron,steel,chemical,and petroleum (石油) production add particles (微粒) to the air.
The effects of air pollution range from loss of clear vision,mild headaches to death.Wherever coal and oil are used for fuel,fumes may kill trees and plants and cause metal to corrode (腐蚀).In some larger cities,these fumes endanger the life of human beings by contributing to lung diseases and causing early deaths.
28.The key point of the passage is thatB.
A.the cause of air pollution is people
B.the causes and the effects of air pollution are both found in cities
C.the effects of air pollution range from headaches to deaths
D.air pollution is caused by dirty air
29.What is the purpose of this passage?A.
A.To persuade people to stop polluting the air.
B.To tell the causes of air pollution.
C.To tell why cities have larger populations.
D.To describe why cities are bad places to live.
30.Why is air pollution heavier in the city than in the countryside?D.
A.Because there are more people in cities.
B.Because the air in the city is dirty.
C.Because there are more cars in the city.
D.Because there are much more gas fumes from cars and burning of coal and oil for energy in the city than in the country.
31.In larger cities,the fumes from coal and oil may result inC.
A.heart disease
B.serious headache
C.lung disease
D.loss of clear vision.
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一些污染产生的原因以及它们所导致的结果,作者想以此来提醒我们要保护环境.
解答 28.B 主旨大意题.纵观全文,文章的前半部分讲的是导致污染的原因,而后半部分讲的是污染的结果.故选B.
29.A 推理判断题.文章中没有直接说写这篇文章的目的.但我们从受污染的结果可以推断出写这篇文章的目的就是要我们减少污染.故选A.
30.D 细节理解题.根据第一段A major source of air pollution is the gas fumes (烟雾) from cars.可知空气污染的主要原因是汽车的废气和用来发电的煤和油的燃烧.而汽车和电在城市里比在郊区用得多.故选D.
31.C 细节理解题.根据文章最后一句"these fumes endanger the lives of human beings by contributing to lung diseases and causing early death."可知在大城市里,煤和石油的烟雾可能会导致肺部的疾病,故选C.
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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