Module4SectionⅠⅠntroduction＆Reading—Pre--reading

1、Module 4Section Step 1Step 2Step 3Step 4Step 51Have you even been caught in a sandstorm? What do you think is the best way to prevent a sandstorm?2Do you know about the dust storm? Do you know what damage a dust storm may cause? Dust storms dont just happen in the middle of the desert. They happen i

2、n any dry area where loose dirt can be easily picked up. Grains of sand thrown into the air by the wind usually fall back down to the ground after a few hours. Smaller bits of particles (顆粒顆粒) stay in the air for a week or longer and can be blown thousands of miles away. Dust from the Sahara desert

3、is always blown across the Atlantic, causing bright red sunrises and sunsets in Miami. The dust doesnt stop there. It keeps traveling as far as the Caribbean and the Amazon Basin. A dust storm is a strong, violent wind that carries fine particles like clay, dust and other materials for long distance

4、s. The fine particles dance around in the air during the storm. The scary thing about a dust storm is that they can spread over hundreds of miles and rise over 10,000 feet (305 meters)well over the height of a telephone pole. They also have wind speeds of at least 25 miles per hour (40 kilometers),

5、which may be not strong enough to blow the feathers off a chicken but still something worth avoiding. Dont be surprised if you suddenly see a dust storm heading your way. Dust storms usually arrive without warning. The dust is blinding, making driving impossible. Often they only last for a few minut

6、es but storms usually leave serious car accidents behind. If youre in a car during a dust storm, remind the driver to pull over to the side of the road and turn off the headlights. Never stop in the middle of the road. During the 1960s there were eight dust storms that caused some serious damage. Re

7、cently Australia was having problems with dust storms. Researchers said the storms cost Australia about 20 million dollars a year in medical bills because of diseases caused by dust storms. In mild dust storms its still possible to walk around although you wouldnt want to. The wind carrying the dust

8、 will leave things looking like they were just hit by a tornado. The best thing to do is find safe cover in a building or stay in your car.When looking at the following pictures, what may occur in your mind?Sandstorms of course! Do you know the harmful effects of sandstorms?As far as I know, sandsto

9、rms can_參考答案：參考答案：kill people and animals, pull down buildings and cause poor harvests.pollute the atmosphere and carry away top soil. The breaking out of sandstorms brings more solid pollutions into the atmosphere and damages the environment and soil in the attacked areas, thus affecting the agricu

10、lture for many years.Do you know how many kinds of behaviors are unfriendly to the environment?_參考答案：參考答案：cutting down the trees/using plastic bags/ pouring waste water into rivers and oceans/giving out poisonous waste gasesScan the passage and match each paragraph with its main idea.Para. 1ASandsto

11、rms sometimes affect Beijing.Para. 2 BSandstorms do a lot of damage to people.Para. 3 CThe government plants trees to prevent sandstorms.Para. 4 DSandstorms have been a major disaster for many Asian countries for centuries.Para. 5 ESandstorms in Asia.Para. 6 FSandstorms in China appear to have incre

12、ased. 答案：答案：Para. 1Para. 6DEFABC.Choose the best answer according to the passage.1When sandstorms happen, what will you wear if you go out?AA hat.BA coat.CA mask. DA tie.2How many kilometres is the desert away to the west of Beijing?A350. B250.C150. D200.3Which statement is WRONG?APeople sometimes c

13、ant forecast the strength of a storm.BThe government plans to continue planting trees for the next ten years.CNorthwest China is part of the sandstorm center in Central Asia.DSandstorms sometimes affect Beijing.4According to the text, we can learn that sandstorms_.Acause people to buy more masksBare

14、 difficult to deal withCare not dangerous but frighteningDwill disappear within five years5Which of the following is TRUE according to the text?ARen Jianbo thought he would probably die from the sandstorm.BA sandstorm can be forecast several months before it arrives.CHuang Xiaomei frequently cycles

15、in sandstorms.DSandstorms occur in Beijing mainly because of its dry climate.答案：答案：1.C2.B3.B4.B5.A.Fill in the blanks according to the passage.SandstormsWhat are they？They are 1. winds that carry sand.How powerful are they？They are strong enough to move 2. .Where do they often occur？In Central Asia,

16、 3. ,Central Africa and .strong, drysand dunesNorth AmericaSandstorms in ChinaThe causeSandstorms begin in 4. and appear to have increased in recent years as a result of “desertification”. It is a process that happens when land becomes desert because of 5. and because people cut down trees and dig u

17、p grass.Sandstorms in Citizens wake up to a(n) 6. sky and strong winds that cover the city in a thick, brownyellow dust. The storms sometimes last all day and affect traffic.desert areasclimate changesorangeSandstorms in ChinaTwo persons descriptionsRen Jianbo described a sandstorm in .Huang Xiaomei

18、 told people about a sandstorm in 7. .The measuresA 8. has been started inChina.The government has already planted over 9. trees and plans to continue planting for the next 10. years.Beijingmass campaign30 billionfiveFill in blanks according to the passage. Sandstorms have been a major disaster for

19、many Asian countries for centuries. Scientists have tried many ways to 1. this problem and in China, a mass 2. has been started to help solve it. Sandstorms are strong, dry winds that carry sand. They are often 3. thick that you cant see the sun, and the wind is sometimes strong 4. to move sand dunes.solvecampaignenoughso Northwest China is part of the sandstorm 5. in Central Asia. Sandstorms begin in desert areas. Sandstorms sometimes 6. Beijing. Citizens wake up to an orange sky and strong w