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>> 成人高等教育 / 微观经济学
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2、货币流通具有自动调节机制的货币制度是（ ） 货币银行学 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 “王老”一般用来称呼什么人？（ ） 商务礼仪 下列各项所得，免征个人所得税的是（ ）。 纳税筹划 设某人篮球投篮命中率为p，要求连续投篮直到投中为止，则投篮次数X服从 A、 二项分布 B、 泊松分布 C、 几何分布 D、 两点分布经济数学 底盘测功机是一种需解体检验汽车性能的检测设备。（ ） A、正确 B、错误汽车诊断与检测