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ation is only because people cut down trees and dig up grass. ? 5. The Chinese Central Weather Station can’t forecast a sandstorm some weeks before it arrives in Beijing. ? 6. The desert is 250 kilometers away to the west of Beijing. So there is no need to take some measures. (F) (F) (F) (F) Part Three ing up with your question. Each group should raise a question by yourselves and let other groups answer and you will be the judges. Ⅳ . Postreading ? Retell the text by filling in the blanks. ? Sandstorms are strong, dry winds that carry ______. They are often____ thick that you cannot see the sun, and the wind is sometimes strong ______to move sand ______. sand so enough dunes ? Northwest China is _____ of the sandstorm centre in Central Asia. Sandstorms begin in ______areas. Des