题目内容
China is trying to find ways to take care of the children parents have left their homes to work in cities.| A．that | B．who | C．whose | D．which |
C解析:
略
略
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Everyone tries to get to school on time. But when bad weather gives you trouble, can you still make it before the bell rings?
In northern China during spring, big sandstorms often make trouble for students and everyone else. When the sky is dark with sand, buses and cars all move much more slowly. Sometimes, people can’t even see for 20 metres.
Sandstorms usually happen in spring. This year, sandstorms started in late March. They have happened in more than 10 provinces (省) in northern China this year. More than 70 million people have had problems in those places because of the sandstorms.
People in southern China don’t have to worry about this kind of bad weather. Most of the sand comes from Gansu and Inner Mongolia（内蒙古）. In northern China, lots of places have few trees and don’t get much rain. People there have been cutting down too many trees. When there aren’t many trees, the ground can’t keep enough water. Over the years, the ground dries up and turns to sand. When spring comes and the ice melts（融化）, the ground becomes looser（更松散的）. Strong winds take the loose sand into the sky.
Sandstorms are bad for people’s health. If people breathe（呼吸） too much sand, they could cough or have asthma（哮喘）.
Sandstorms also give farmers lots of problems. Sometimes their sheep get lost in the storms and never get back home. The winds also tear down farmers’ houses.
What can you do to stop sandstorms? Here’s an idea: Ask you 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 from cutting.
【小题1】In which season do sandstorms usually happen?
【小题2】Which of the following provinces in China is often hit by sandstorms?
【小题3】The underlined phrase “tear down” in the sentence means “_________”.
【小题4】 According to the passage, what cannot be caused by sandstorms?
【小题5】Which is not stated in the passage？_______________ .
In northern China during spring, big sandstorms often make trouble for students and everyone else. When the sky is dark with sand, buses and cars all move much more slowly. Sometimes, people can’t even see for 20 metres.
Sandstorms usually happen in spring. This year, sandstorms started in late March. They have happened in more than 10 provinces (省) in northern China this year. More than 70 million people have had problems in those places because of the sandstorms.
People in southern China don’t have to worry about this kind of bad weather. Most of the sand comes from Gansu and Inner Mongolia（内蒙古）. In northern China, lots of places have few trees and don’t get much rain. People there have been cutting down too many trees. When there aren’t many trees, the ground can’t keep enough water. Over the years, the ground dries up and turns to sand. When spring comes and the ice melts（融化）, the ground becomes looser（更松散的）. Strong winds take the loose sand into the sky.
Sandstorms are bad for people’s health. If people breathe（呼吸） too much sand, they could cough or have asthma（哮喘）.
Sandstorms also give farmers lots of problems. Sometimes their sheep get lost in the storms and never get back home. The winds also tear down farmers’ houses.
What can you do to stop sandstorms? Here’s an idea: Ask you 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 from cutting.
【小题1】In which season do sandstorms usually happen?
| A．In spring. | B．In summer. | C．In autumn. | D．In winter. |
| A．Fujian Province. | B．Yunnan Province. | C．Jiangsu Province. | D．Gansu Province. |
| A．使……哭泣 | B．弄倒 | C．摧残 | D．加固 |
| A．Health problems. | B．Traffic problems. |
| C．The loss of farm animals. | D．Noise pollution. |
| A．Trees can help keep enough rain water |
| B．More trees need to be planted |
| C．Some people are doing harm to the environment |
| D．Sandstorms are the main cause of asthma |
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 .
根据短文内容，选择正确答案。
【小题1】In 1620 ,about_____ the USA was covered by forests
| A．a third | B．half | C．to thirds | D．a fourth |
| A．sand | B．water | C．wind | D．forests |
| A．7,000 kilometers | B．1,700 kilometers |
| C．7,000 meters | D．400 kilometers |
| A．China | B．the USA |
| C．some countries | D．every part of the world |
| A．the Great Wall | B．Tall buildings |
| C．Great Green Wall | D．Flowers and glass |