Pollution means adding dirty or harmful things to land, air, water and so on. As a result, they are no longer pleasant or safe to use. Pollution is bad for animals and plants, and it even makes people’s health in danger. In our daily life, we can see different kinds of pollution in many places. There are three main forms of pollution: land pollution, air pollution and water pollution. 

Land pollution is caused by solid waste, such as cans, bottles and some plastic things which aren’t broken down quickly. It makes the environment look very bad. However, air pollution is more serious than land pollution. It is much worse in cities and towns because of the fumes(废气) from traffic and the waste from human activities. When people drive their cars, fumes which are most made up of CO2, NO2 and SO2 are given off. After the gases get into the air, they may mix with clouds. Then they will become some harmful chemicals (化合物) falling on the ground with rain. It is one of the reasons for soil erosion (土壤侵蚀) which is one example of water pollution.

Various kinds of pollution will cause many health problems. People have realized they must change this serious situation. There are many ways to control pollution. To develop alternative energy is very popular in many countries. China, for example, has made up its mind to be a leader in this field. It is trying hard to make full use of energy from the sun and wind. It has paid plenty of money to make electric cars and trains instead of traditional traffic. We should also take action to make our environment cleaner every day. Take cloth bags while going shopping and drive cars less. We have only one earth. We must take steps now to help protect our environment for the future wherever we are.

1.How many main forms of pollution are mentioned in the passage?

A．Two.             B．Three.            C．Four.             D．Five.

2.Why is air pollution much worse in cities and towns?

A．Because of the cans and bottles that people throw away.

B．Because of the plastic things which aren’t broken down quickly.

C．Because of the fumes made up of SO2, CO2 and O2.

D．Because of the waste from human activities and the fumes from traffic.

3.Which of the following is TRUE according to the passage?

A．Pollution hardly does harm to humans.

B．China doesn’t want to develop alternative energy.

C．Air pollution will cause soil erosion and water pollution.

D．Land pollution is only caused by solid waste.

4.To make our environment cleaner, we shouldn’t __________.

A．use cloth bags while shopping              B．ride a bike to school

C．drive a car out every day                  D．go to work on foot

5.The main idea of this passage is _________.

A．to introduce different forms of pollution and ways to control it

B．to introduce the harmful chemicals and the solid waste

C．to introduce the alternative energy and the ways to use it

D．to introduce the electric cars and traditional traffic

Pollution means adding dirty or harmful things to land, air, water and so on. As a result, they are no longer pleasant or safe to use. Pollution is bad for animals and plants, and it even makes people’s health in danger. In our daily life, we can see different kinds of pollution in many places. There are three main forms of pollution: land pollution, air pollution and water pollution. 
Land pollution is caused by solid waste, such as cans, bottles and some plastic things which aren’t broken down quickly. It makes the environment look very bad. However, air pollution is more serious than land pollution. It is much worse in cities and towns because of the fumes(废气) from traffic and the waste from human activities. When people drive their cars, fumes which are most made up of CO2, NO2 and SO2 are given off. After the gases get into the air, they may mix with clouds. Then they will become some harmful chemicals (化合物) falling on the ground with rain. It is one of the reasons for soil erosion (土壤侵蚀) which is one example of water pollution.
Various kinds of pollution will cause many health problems. People have realized they must change this serious situation. There are many ways to control pollution. To develop alternative energy is very popular in many countries. China, for example, has made up its mind to be a leader in this field. It is trying hard to make full use of energy from the sun and wind. It has paid plenty of money to make electric cars and trains instead of traditional traffic. We should also take action to make our environment cleaner every day. Take cloth bags while going shopping and drive cars less. We have only one earth. We must take steps now to help protect our environment for the future wherever we are.
【小题1】How many main forms of pollution are mentioned in the passage?

阅读下列短文，根据短文中的信息完成文后表格。（每空一词）

   Beggars are often seen sitting under blankets as people walk past them in Cambridge’s market center. Some ask passers-by(路人) for change and some just sit and wait to be given money．

   To solve the problem of begging, an “alternative giving” plan has been suggested. Ten blue money boxes will be placed in busy places such as the market and the railway station. The aim is to encourage people not to give money directly(直接地) to beggars but instead to give generously to the local people who are homeless．

   Different people have different opinions. Supporters of this plan think it will be a good way to solve the beggars’ alcohol and drug problems(酗酒和吸毒). But the police don’t support it. They argue that beggars who do not receive cash（现金）may turn to criminality( 犯罪). The homeless charity “Crisis” said the success of any plan will depend on its style. They think that imaginative and positive(积极的) plans can help create local understanding and sympathy（同情心）. Most of the beggars don’t like the plan because they think they will not get enough money from the boxes for their showers, food, and clothes.

   Begging is a big social problem both in developing and developed countries. Governments must play a big role in working out this problem. Training beggars to work and helping them to find jobs is a good way. This is true for developing countries where many simple jobs exist. People should also be educated to see beggars not as dirty and dangerous, but as people who need understanding and help.

Lights, cameras, action! It’s movie night with your friends. And you’re looking for something to snack on during the movie. What better snack to choose than popcorn? In American culture, popcorn and movies are closely tied together. It is one of the most popular snacks offered at a movie theater. Popcorn is a popular treat made out of corn kernels that have been ‘popped’ by heat. Often times, the popped corn is covered with melted butter and salt to give the snack more flavor.

Popcorn has a history that goes back about 5,000 years ago to the American Indians. Corn was a major part of their diet, so they had many different ways of preparing it. They made popcorn by tossing prepared corn kernels onto a bed of hot stones over a fire. As the popcorn shot out in various directions, people made a game to see who could catch the most popcorn. Naturally, the prize was being able to enjoy this delicious snack. In fact, people loved the snack so much that they began to serve it with cream and sugar for breakfast.

In the late 19^th century, popcorn carts began appearing on almost every American street corner. These carts were big hits at fairs, carnivals, and expositions. Later on, home version of popcorn poppers became available, and the snack became even more popular. Not to mention, this was also around the time when popcorn was introduced to the movie theaters.

One of the biggest innovations for popcorn was microwaveable popcorn. For people who did not want to go through the trouble of making popcorn at home, microwaveable popcorn was nice alternative. Today, there are many variations for eating popcorn. There’s the classic buttered popcorn, the sweet alternative of caramel corn (where the popcorn is covered in a light coat of molasses), and others such as cheesy popcorn (popcorn covered in a layer of cheese dust). 

1.Where do people often eat popcorn in America?

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2.What do people often put on the top of the popcorn to make it more delicious?

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3.When did people start to see popcorn carts on American Streets?

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4.Can people make popcorn at home in America?

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5.What’s the main idea of the passage?

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