In my opinion, the key ____air pollution is t...

In my opinion, the key ____air pollution is to inspire people to take public transport in big cities.

A. reduced　　 B. reducing　　 C. to reduce　　 D. to reducing

高二英语单项填空中等难度题查看答案及解析

In my opinion, it's the flying birds rather than the pilot that________for the air crash.

A. are to blame      B.is to blame        C.is to be blamed   D.are to be blamed

高二英语单项填空中等难度题查看答案及解析

One reason for my ______ for living in the countryside is that it has no air pollution or traffic jams.

A. preference　　 B. attitude　　 C. explanation　　 D. request

高二英语单项填空简单题查看答案及解析

It is well known that _________ air and water are harmful to people’s health.

A. pollute　　　　　　　　 B. polluting

C. to pollute　　　　　　 D. polluted

高二英语单项填空中等难度题查看答案及解析

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 are 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 corrode                            B．to twist

C．to turn black                           D．to become rusty

5.In larger cities, the fumes from coal and oil may contribute to ___________.

A．heart disease                          B．loss of clear vision

C．lung diseases                           D．serious headache

高二英语阅读理解困难题查看答案及解析

Believing in people is the key to motivating people to ______ their potentials.

A. have               B. hide                C. reach             D. limit

高二英语单项填空中等难度题查看答案及解析

In my opinion, the most famous 　　　 to tourists in the city is the wooden tower.

高二英语单项填空中等难度题查看答案及解析

Some people fear that ______ air pollution may bring about changes in ______ weather around the world.

A. /, the       B. the, /       C. an, the      D. the, a

高二英语单项填空中等难度题查看答案及解析

Some people fear that ________ air pollution may bring about changes in _______ weather around the world.

高二英语单项填空中等难度题查看答案及解析

I 　　　　 a report about the air pollution in my hometown all the morning and haven’t finished it yet.

A. wrote　　 　　　　　 B. have been writing

C. was writing　　　　 D. have written

高二英语单项填空中等难度题查看答案及解析