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【小題1】Trees can get light from       in the daytime.

A．C02

B．O2

C．the sun

D．the moon

【小題2】Chlorophyll is in         .

A．sunlight

B．soil

C．air

D．leaves

【小題3】We can get more O­₂ by         .

A．planting more trees

B．cutting trees down

C．making the water in soil(土壤) polluted

D．making more CO2

【小題4】CO₂ from air and      can produce food  for trees with the help of chlorophyll and sunlight.

A．water in the sea	B．water from soil
C．water in the river	D．O2 into air

【小題5】The picture tells us         .

A．how trees let O2 go into air in the sunlight

B．how trees let CO2 go into air in the sunlight

C．the sunlight isn't important to trees at all

D．trees can take in O2 and let out CO2

When you watch TV and play video games you make global(全球的) warming worse! It may seem hard to believe, but when electricity is made, so are greenhouse gases(溫室氣體). This means that every time you use electricity you help make global warming worse!
Cars are also making global warming worse. They burn fossil fuels(化石燃料) in their engines, and send lots of greenhouse gases into the air.
Global warming may be a big problem, but we can all help stop it. People can try to drive their cars less. Or even get ones that run on sunlight! You can also help. Let’s try one of these top ideas:
(1) Try to use less electricity. Turn off lights, your television, and your computer when you’ve stopped using them. To make electricity, fossil fuels are burned in big factories. But burning fossil fuels also makes greenhouse gases. You should also try to watch less TV.
(2) Plant trees. Not only is it a fun thing to do, but it is also a great way to lower the number of greenhouse gases in the air. Trees take carbon dioxide out of the air when they grow.
(3) Don’t throw away your rubbish, try to recycle it. If rubbish is not recycled, it is put in the ground. There it rots(腐爛) and makes a greenhouse gas called methane(甲烷).So try to recycle cans, bottles, plastic bags and newspapers. It’ll make you feel great! And it’ll help the Earth.
【小題1】If we _____, we may make global warming worse.

A．use less electricity	B．drive a car on sunlight
C．plant trees	D．throw away rubbish

【小題2】We may use more electricity by______.

A．turning off lights	B．shutting down computers
C．turning up CD players	D．turning off TV

【小題3】______ will make global warming worse.

A．Methane

B．Cans

C．Newspapers

D．Bottles

【小題4】Using less electricity does good to global warming because_______.

A．the less electricity is used, the more greenhouse gases are produced

B．the more electricity is used, the more greenhouse gases are produced

C．more electricity is used, less greenhouse gases are produced

D．less electricity is used, more greenhouse gases are produced

【小題5】Which is the following is NOT TRUE according to the passage?

A．Driving cars on sunlight helps to stop global warming.

B．When cars burn fossil fuels, they produce greenhouse gases.

C．When trees grow, they send carbon dioxide into the air.

D．By planting more trees, we can lower the number of greenhouse gases in the air.

In 1620, about half the USA was covered by forests. Today the forests have almost gone. A lot of good land has gone with them, leaving only sand. China doesn’t want to copy the USA’s example. We’re planting more and more trees. We’ve built the " Great Green Wall" of trees across northern part of our country. The Great Green Wall is 7,000 kilometres long, and between 400 and 1,700 kilometres wide. It will stop the wind from blowing the earth away. It will stop the sand from moving towards the rich farmland in the south. More "Great Green Walls" are needed. Trees must be grown all over the world. Great Green Walls will make the world better.
根據短文內容，選擇正確答案。
【小題1】The Great Green Wall in China is ______.

A．7,000 kilometers long	B．1,700 kilometers long
C．7,000 meters long	D．400 kilometers long

【小題2】Trees must be grown in ______.

A．China

B．the USA

C．some countries

D．every part of the world

【小題3】Which of the following statements is not true?

A．The Great Green Wall will stop wind from blowing the earth away.

B．The Great Green Wall will make our life better.

C．We don’t need to plant more trees.

D．The Great Green Wall will stop the sand moving towards the rich farmland.

Now, more and more cities are facing problems, such as high housing costs, pollution and crime. Let’s see what people in Hyderabad, India and in Sao Paulo, Brazil do to solve (解決) the problems.

Hyderabad, India

To improve people’s lives, Hyderabad is planting more and more trees. The city is even creating greener buildings that use less water and less electricity for power. Adding green to a city has a number of advantages. For example, trees make the air cleaner. In Hyderabad, streets were grey and dirty in the past. However, today they are filled with trees and flowers, making the city cleaner and more colourful. Green areas also give people places to relax or exercise. A study in the USA shows an interesting thing: the greener a neighborhood is, the less crime there is.

Sao Paulo, Brazil

Many people work in the centre of Sao Paulo, but they don’t live there. They’ve spread out to neighborhoods outside the city because housing is cheaper. Every day, these people travel into the city, and traffic is very heavy. City planners are using different ways to deal with (處理) the problem. First, they are building better subways. Another goal is to make it cheaper for people to live in the downtown area (中心區). Doing this will reduce traffic and pollution in the city.

1.What does the underlined word “greener” mean?

A．Taller.

B．Easier.

C．Better for the environment.

D．More brightly coloured.

2.Which advantage of making Hyderabad greener is NOT talked about in the passage?

A．It helps people work better.

B．It makes the city cleaner.

C．It reduces crime.

D．It makes it easier to exercise.

3.According to the passage, what problem does Sao Paulo have?

A．A lot of people don’t have jobs.

B．Too many people live in the city centre.

C．A lot of people are moving out of the city.

D．Too many people travel into the city every day.

 

In 1620,about half the USA was covered by forests .Today the forests have almost gone .A lot of good land has gone with them ,leaving only sand .China doesn’t want to copy the USA’s example.We’re planting more and more tress .We’ve built the “Great Green Wall ”of tress across northern pat of our country .The “Great Green Wall”is 7,000 kilometers long ,and between 400 and 1,700 kilometers wide .It will stop the wind from blowing the earth away .It will stop the sand from moving towards the rich farmland in the south .More “Great Green Wall ”are needed .Trees must be grown all over the world. “Great Green Wall ”will make the world better .

根據短文內容，選擇正確答案。

1.In 1620 ,about_____ the USA was covered by forests

A．a third

B．half

C．to thirds

D．a fourth

2. A lot of good land has gone with _____.

A．sand

B．water

C．wind

D．forests

3. The “Great Green Wall”In China is _____long

A．7,000 kilometers	B．1,700 kilometers
C．7,000 meters	D．400 kilometers

4. Trees must be grown in _____.

A．China	B．the USA
C．some countries	D．every part of the world

5._____ will make the world better .

A．the Great Wall	B．Tall buildings
C．Great Green Wall	D．Flowers and glass