2023-10-27 21:44:59 04
People and air pollution are often 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 kind of air pollution is the gas from cars. Statistics (统计资料) show that 93 percent of all auto trips are within cities.Another major kind 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 rubbish than the year before. The burning of rubbish makes air pollution even worse. Many major industries are also responsible for the dirty air in the around cities. The fumes (烟) from iron, steel, chemical, and petrol production add particles (微粒) to the air.The effects of air pollution range from mild headaches to death. The levels of pollution found in heavy 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 (腐蚀). In some of the larger cities, these fumes endanger the lives of human beings by contributing to lung diseases and causing early death. The key point of the passage is that 1 .
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
2. What is the purpose of this passage? 2
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
3. Why is air pollution more grave in the city than in the country? 3
A．Because there are larger populations in cities.
B．Because the air in the city is dirty.
C．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 4 .
A．to corrode B．to twist C．to turn black
5. In larger cities, the fumes from coal and oil may contribute to 5 .
A．heart disease B．loss of clear vision C．lung diseasesHave you filled in the application form your passport yet?For days, smog persisted in many areas. China is to control air pollution.— We have to stay at home for a whole day. Why not go out and have a walk?
— — A: are the most popular things people buy online?
— B: Definitely, clothes. __5____4____3____2____1__二、阅读理解：阅读下面的短文，根据文章内容从A、B、C三个选项中选出一个最佳选项。
Cars are an important part of life in the United States. Without a car most people feel that they are poor. And even if a person is poor he doesn't feel really poor when he had a car.
Henry Ford was the man who first started making cars in large numbers. He probably didn't know how much the car was going to affect American culture. The car made the United Stated a nation on wheels. And it helped make the United States what it is today.
There are three main reasons why the car becomes so popular in the United States. First of all, the country is a huge one and Americans like to move around in it. The car provides the most comfortable and cheapest form of transportation. With a car people can go anyplace without spending a lot of money.
The second reason cars are popular is the fact that the United States never really developed an efficient and inexpensive form of public transportation. Long-distance trains have never been as common in the country as they are in other parts of the world. Nowadays there is a good system of air-service provided by planes. But it is too expensive to be used frequently.
The third reason is the most important one, though. The American spirit of independence is what really made cars popular. Americans don't like to wait for a bus, or a train or even a plane. They don' t like to have to follow an exact schedule. A car gives them the freedom to schedule their own time. And this is the freedom that Americans want most to have.
The gas shortage has caused a big problem for Americans. But the answer will not be a bigger system of public transportation. The real solution will have to be a new kind of car, one that does not use so much gas.
We can learn from this passage that Americans 1 .
A．spend a lot of money traveling by car
B．travel a lot in their cars
C．seldom travel by plane
2. Which of the following statements is TRUE? 2
A．In the United States even the poor own cars.
B．In the United States all the poor have no cars.
C．An American will feel poor unless he has a car.
3. In the writer’s opinion, cars are popular in the United States mainly because 3 .
A．Americans like to plan their own time
B．The United States does not have enough public transportation
C．Americans will not feel poor when they travel in their cars
4. “A nation on wheels” in the second paragraph means that 4 .
A．everyone in the United States owns a car
B．the United States produces most of the cars in the world
C．cars play an important part in American’life
5. The real solution to the gas shortage problem is 5 .
A. to make less cars
B. to develop a public transportation system
C. to make gas-saving carsI have an appointment with Mr. Xie at about 10 o’clock tomorrow morning, but would you please it to sometime next week?