People and the sources of air

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 from cars. Statistics show that 93 percent of all auto trips are within cities. Another major source of dirty air 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 country.

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 production add particles to the air.

The effects of air pollution range from mild headaches to death. The levels of pollution found in heavy for traffic may cause headaches for loss of clear vision. Wherever coal and oil are used for fuel, fumes may kill trees and plants and cause metal to corrode. In some of the larger cities, these fumes endanger the live of human beings by contributing to lung diseases and causing early death.

1. The key point of the passage is that _____.
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 death
D. air pollution is caused by dirty air

2. What is the purpose of this passage?
A. to persuade people to stop polluting the air
B. to tell the causes of air pollution
C. to tell why cities are bad places to live
D. to describe why cities are bad places to live

3. Why is air pollution more grave in the city than in the country?
A. Because there larger populations 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.

4. The fumes from coal and oil may cause metal _____.
A. to turn black B. to become rusty
C. to corrode D. to twist

5. In larger cities, the fumes from coal and oil may contribute to _____.
A. heart disease B. lung diseases
C. loss of clear vision D. serious headache

參考答案：
1. B的主題。在全文中，文章的前半部分是關于污染的原因，而后半部分是關于污染的結果。A只強調原因，C只強調結果，D與本文無關。所以B是正確的答案。
2. A推理問題。這篇文章并沒有直接說寫這篇文章的目的。但我們可以從污染的結果中推斷出，寫這篇文章的目的是為了減少污染。所以A是正確的答案。
3. D細節問題。第一段的后半部分表明，空氣污染的主要原因是汽車的廢氣和煤油的燃燒。城市里的汽車和電力比郊區要多。所以D是正確的。
4. C細節問題。文章最后一段第三句直接提到：wherever coal and oil are used for fuel, fumes may … cause metal to corrode.。所以C是正確的答案。
5. B細節問題。根據文章的最后一句“these fumes endanger the lives of human beings by contributing to lung diseases and causing early death.可以看出，B是正確答案。

精品小說推薦： 昔日落魄少年被逐出家族，福禍相依得神秘老者相助，從此人生路上一片青雲！ 我行我瀟灑，彰顯我性格！ 彆罵小爺拽，媳婦多了用車載！ 妹紙一聲好歐巴，轉手就是摸摸大！ “不要嘛！” 完整內容請點擊辣手仙醫

Tags：英語   參考   高考