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>> 成人高等教育 / 市场营销策划
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佳题速递：
C 语言中以下几种运算符的优先次序（）的排列是正确的. C语言程序设计 不属于口语表达者需要的文化底蕴的是（） 社交礼仪 阅读理解：阅读下列短文，回答文后问题，选择最佳答案Trees mainly serve man in three important ways: They provide him with wood and other products; they provide him shade; and they help to prevent droughts and floods.Unfortunately, in many parts of the world, man has not realized that the third of these services is the most important．In his eagerness to make money from trees, he has cut them down in large numbers, only to find that without them he has lost the best friends he had. And besides, he is usually too careless to plant and look after new trees. So the forests slowly disappear.This does not only mean that man will have fewer trees. The results are even more serious: for where there are trees, their roots break up soil allowing the rain to sink in and also bind(固定) the soil, thus preventing it from being washed away easily；but where there are no trees, the rain falls on hard ground and flows away, causing floods and carrying away the rich top-soil. When the top-soil is gone, nothing remains but worthless desert.Two thousand years ago，a rich and powerful country cut down its trees to build warships, with which to gain itself an empire．It set up the empire, but, without its trees, its soil became poor and grew weak. When the empire fell to pieces, the home country found itself faced by floods and starvation(饥荒)．3. Land becomes desert after all trees are cut down because _ _ _ _ _ _ _ _ _ _ . A、 A. roots of trees break up the soil B、 B. no tree keeps the rain and protects the top-soil C、 C. strong winds bring a lot of sand D、 D. there are too many rainfalls to make it 大学英语1 费德勒模型认为，某一领导方式的有效性与他是否和其所处的环境相适应无关。 A、正确 B、错误管理学 组织变革的目标是（） 管理学 1956年4月，毛泽东提出社会主义文化繁荣和科学进步的“双百”方针是？ 中国近现代史纲要