readingandvocabulary[修改版].ppt

Module 4 Sandstorms in Asia;Please watch a piece of view screen about sandstorms and discuss ;cutting down trees; digging up grass; climate changes …;Please read the passage quickly and match them.; 1.The winds in a sandstorm can sometimes  prevent you from seeing the sun. 2.Northwest China is the sandstorm centre in  Central Asia. 3.The Chinese Central Weather Station can  only forecast a sandstorm some months  before it arrives. 4.It is frightening to be cycling in a sandstorm.;Read the passage again and choose the best answers.;2. What do the experts advise people to do when a sandstorm arrives in the city? A. Don’t go out B. Don’t wear masks. C. Don’t go to work as usual. D. Don’t ride bicycles ;3. The factors（因素） that cause land to be desert are ______. A. cutting down trees. B. digging up grass C. climate changes D. all of the above;4. From the last paragraph we know ____. A. the government won’t plant trees any more in five years B.?the distance between the desert and the center of Beijing is only 250 kilometers C. more than 30 million trees have been planted in Beijing D. the government is taking measures(采取措施）to prevent sandstorms; Sandstorms have been a major disaster for many Asian countries for centuries. Sandstorms are strong , dry winds. The wind is sometimes ______ _____ ______ move sand dunes. “__ ____ ____ ______ __ a sandstorm was a terrible experience,” Ren Jianbo said. Desertification is a process that happens because people ___ ____trees and ____ ___ grass. Traffic moves very slowly because the thick dust makes___difficult ____ ___. So weather experts _______ people _____ ____ go out . ___ prevent it _______nearer , the government is planting trees. ;;If we are friendly with nature,our world will become more and more beautiful.; Task 2：Design a poster that encou