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教学组织形式的选择和应用中，班级教学的基本形式一般有按行政班级分班、按男女分班和 。
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成就目标理论把成就目标分为
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彼は来ると言いましたから、 来ると思います。（ ）
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糟制菜肴的糟料有()
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列举一个你关注的当今社会现象
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[单选题]Man pollutes his environment in various ways. For example, some people dirty the air wiih gases and smoke. The machines and motor vehicles they operate fill the air with 1______ noise. 2______ people poison the water with chemicals and other 3______. Still others damage the soil with too many 4______.5______,people ruin natural beauty by 6______ rubbish on the land and in the water. Today, millions of people have become alarmed by the dangers of 7______, and large numbers of people are trying to reduce it.But it is not easy to reduce pollution 8 much of it is caused by things that 9______ people. For example, exhaust from automobiles causes a large percentage of all air pollution, but the automobiles provide 10______ for millions of people. 11______ discharge much of the materials that 12______ air and water, but factories 13______ jobs for people. Too much chemical fertilizer can 14______ soil, but fertilizers are important 15______ to the growth of crops.However, people have already found several ways in which pollution can be gradually 16______. Scientists and engineers have found some ways to 17______ the amount of pollution that 18______ things as automobiles and factories cause. Governments can pass laws that 19______ businesses and individuals to stop or reduce certain polluting 20______.19 A acquire B reduce C demand D induce
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公安民警穿着常服或者警礼服的情形有哪些？
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国际商业快递有EMS,DHL,TNT,
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被除数除以10，要使商不变，除数要______．
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1980年哪些城市和深圳一同被设为经济特区？（多选）