计算：312-313+48．-数学

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• The rate of racial progress varies in different areas of the country, but in the past ten years ____
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• （0.5-213）-（18-75）-数学
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• In the past few years, sea ice ____ in the Arctic as a result of global warming.A．had meltedB．has be
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• Instead of flocking into the cities, the peasants __________ villages and townships of a new type in
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• The teacher told us that the sun ＿＿＿ in the east and ＿＿＿ in the west. A．raised; setB．rose; setC．rise
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• ---- I ’m sure Andrew will win the first prize in the final. ---- I think so. Hefor it for months.A．
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• Mr. Smith was very disappointed to see the car he had had _____ went wrong again.A．to be repairedB．r