( A )

Cut the Carbon Footprint

Everything you do leaves a “ carbon footprint”(碳足迹). For example, When you travel in a taxi, the car gives off (排放) CO₂ into the air. CO₂ is a greenhouse gas. Greenhouse gases make the earth become warm. To protect our environment, we need to leave less of a “carbon footprint”. How big is your carbon footprint? To get an idea, take a look at the following numbers.

Living areas

l  TV sets and DVD players produce 723kg of CO₂ a year.

l  If you turn them off when you’re not using them, you can cut that number by 108kg.

Laundry room (洗衣房)

   Drying clothes in a dryer produces a lot of CO₂

l  If you use your dryer five times per week, you produce 185kg of CO₂ per year.

l  Dry your clothes in the sun instead.

Bathroom

l  If you take an eight-minute shower every day, you produce 616kg of CO₂ a year.

l  If you only use six minutes to take a shower, you can cut that number by 154kg a year.

根据短文内容，判断下列句子的正误，正确的用“T”，错误的用“F”。 1 CO₂ is a greenhouse gas that can make the earth warm.

2 Watching TV and traveling in a taxi can produce little CO₂.

3 If we use a dryer five times per week, we produce 154kg of CO₂ per year.

4  If we spend less time taking a shower, we can cut the number of CO₂.

5 The less of a “ carbon footprint” we leave, the better our environment will become.

( B )

The students of Grade 9 at the Clean City School collect empty bottles. In June, they are going to take them to a recycling centre. They’re going to sell the bottles and buy some books for the school library.

Jimmy has started a graph (图表) to show the number of the bottles they have collected. This is the graph.

请根据短文内容,选择最佳答案。

6 How many bottles did the students collect in October?

A. 40         B. 60         C. 75          D. 85

7 The students collected       more bottles in December than in February.

A. 60         B. 30         C. 20          D. 70

8 The students collected the same number of bottles in March and        .

    A. January and November       B. January and June

    C. May and June               D. April and May

9 In which month did the students collect the fewest bottles?

    A. September       B. October      C. February       D. December

10 Why do the students collect the empty bottles?

     A. Because they are in the Clean City School.    

B. Because they are in Grade 9.

     C. Because they wanted to start a graph.

D. Because they want to do something good for the school library.

( C )

The world is becoming smaller by using modern traffic, TV, telephone and so on. Life today is easier than it was hundreds of years ago, but it has also brought new problems. One of the biggest is pollution. Pollution comes in many ways. We see it, smell it, drink it and even hear it.

The more people, the more pollution. Many years ago, the problem was not so serious because there were not so many people. Man is now slowly polluting the whole world.

Air pollution is still the most serious. It’s bad to all living things in the world. Water pollution kills our fish and pollutes our drinking water, noise pollution makes us become angry more easily. The pollution of SO₂ is now the most dangerous problem of air pollution. It is caused by heavy traffic. It is true that if there are fewer people driving, there will be less air pollution.

Many countries are making rules to fight pollution. They stop people from burning coal in houses and factories in the city. So the less pollution there is, the better life people will have.

请根据短文内容，选择最佳答案。

11Our world is becoming much smaller__________.

    A. because of science development   B. because there are fewer people

    C. because there are more people    D. Because the earth is being polluted day and night

12 Hundreds of years ago, life was _________ it is today.

A. easier than     B. as easy as       C. harder than       D. as hard as

13 Pollution comes in many ways . We can even hear it. Here “it” means_______.

A. air pollution    B. noise pollution   C. water pollution    D. soil pollution

14 Air pollution is the most serious kind of pollution because________.

A. it makes much noise                B. it’s bad to all living things in the world

C. it has made our rivers and lakes dirty   D. it causes unhealthy food

15 Which of the following is NOT true?

    A. Many countries are making rules to fight pollution.

B. The pollution of the earth grows as fast as the world’s population does.

C. There will be less air pollution if fewer people drive cars.

D. The problem of pollution is not so serious because there are so many people.

Napoga is a 12-year-old girl in Ghana(加纳)，Africa. It is hard for her family to get clean water. Every morning，she leaves home at half past five to get clean water for her family in a village far away. It takes her six hours to get enough clean water for daily cooking and drinking. She has no time to go to school or to play with her friends. Millions of people in the world are like Napoga. They can't get enough clean water to keep healthy.
Earth Day is April 22. But on all other days，we must also remember it. The water we use is the most important natural resource(自然资源) on the earth.
Water covers 70% of the earth's surface. But most of that is sea water. We can't use it for very many things. Fresh water covers only 1% of the earth's surface.
You probably feel lucky that your life isn't as hard as Napoga's. But that doesn't mean you don't have to worry about water. We all face serious water problems. One of them is water pollution. All kinds of things from cars，factories，farms and homes make our rivers，lakes，and oceans dirty. Polluted water is very bad for people to drink. And dirty water is bad for fish，too. Now, 34% of all kinds of fish are dying out.
How do cars and factories make our water dirty？First，they pollute the air. Then，when it rains，the rain water comes down and makes our drinking water dirty. Dirty rain，called acid rain(酸雨)，is also bad for plants，animals and buildings.
Scientists say that in 30 years，more than half of the people in the world won't have enough clean water. We have to learn how to save more water for ourselves and our children. Here is some advice for saving water：
●Turn off the water while you brush your teeth. You can save as much as 450 liters(升) each month.
●Leaky taps(漏水的龙头) waste a lot of water. Fix them right away！
●You can easily cut your 10-minute showers in half----and you'll be just as clean.
●When you wash dishes，don't let the water run.
●Only wash clothes when you have a lot to wash. If your washing machine isn't full，you're  wasting water！
【小题1】On the earth，_______.