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Learning aims: to review the texts carefully and remember the important sentences Difficulties: to understand and use the important phrases ,structures and sentences. 一． Finish and translate the sentences Module 4 He thought that the key to ________ (feed) people was to _______ (have) more rice and to ________ (produce) it more quichly. _________________________ (由于) Yuan Longping’s discoveries Chinese rice production _______ ______ (增长了) 47.5 percent _____ ______ ________ ( 在20世纪90年代). It’s yield is ______ _______ ________ (比……多得多 ) the yield of other types of rice _______ (grow) in Pakistan. Researchers _______________________ (bring in) from all over China __________ (develop) the new system. He thought there was one way to do this---by crossing different species of rice plant. _________ (move) in a wheelchair and __________ (speak) through a special computer, he has become the voice of science. The Chinese discovered that the gas ________ (escape) from the tube could lift it into the air. The tubes were attached to a long stick which helped keep the rocket ________ (move) in a straight direction. Soon the Mongols learned ____________________________ (怎样制造火箭) and it is possible that they introduced them to Eroupe. | 
