题目内容
[ ]
B. planted
C. are planted
D. were planted
Sandstorms are bad for people's health. If people breathe in too much sand, they will cough or have serious illnesses. Sandstorms also give farmers lots of problems. Sometimes their sheep get lost in the storms and never come back home. The winds also tear the farmers' houses down.
What can you do to stop sandstorms? Here's a piece of advice. Ask your parents to help you plant some trees this spring. If you see people cutting down too many trees, tell them about the dangers of sandstorms, and ask your government to stop them.
【小题1】When do sandstorms usually happen?
A.In summer. | B.In spring. | C.In winter. | D.In autumn |
肥沃的 B.贫瘠的 C.疏松的 D.大量的
【小题3】The second paragraph tells us ______________.
A.why sandstorms happen in northern China |
B.the dangers of sandstorms |
C.sandstorms aren't terrible at all |
D.how sandstorms happen |
A.Plant more trees in spring. |
B.Stop people to cut down too many trees |
C.Don't stay outside when sandstorms happen. |
D.Tell people about the dangers of sandstorms. |
A.Sandstorms |
B.How we can stop sandstorms |
C.Why sandstorms only happen in northern China. |
D.Sandstorms can influence most of China. |
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.
根据短文内容,选择正确答案。
【小题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 |
A.China | B.the USA | C.some countries | D.every part of the world |
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. |
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(温室气体). 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(腐烂) 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.
【小题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 |
A.turning off lights | B.shutting down computers |
C.turning up CD players | D.turning off TV |
A.Methane | B.Cans | C.Newspapers | D.Bottles |
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 |
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. |