题目内容
在经济学里,()有使用价值和交换价值之分。一种商品的使用价值,是该商品能满足人们某种需要的效用;交换价值,是该商品同其他商品相交换的量的关系或比例,通常用货币来衡量,即交换价值表现为一定数量的货币或其他商品,一般简称的价值是指交换价值,在房地产估价中所说的价值也是指交换价值。。
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【B15】
A．作业调度程序B．假脱机处理程序C．存储管理程序D．交通控制程序
某储户2001年每月存200元,一年期,连续存满,存款余额为2400元,如果月利率为2.125‰,则到期应付利息为()。
Everyone 【B6】 toady that if too many fish are taken from the sea, there will soon be none left. Yet, with modem fishing 【B7】 more and more fish are caught. We know that if too many trees are cut down, 【B8】 will disappear and nothing will grow on the land. Yet, we 【B9】 to use bigger and more powerful machines to 【B10】 more and more trees.
We realize that if rivers are polluted with waste products from factories, we will die. 【B11】 , in most countries wastes are 【B12】 put into rivers or into the sea, and there are 【B13】 laws to stop this.
We know, too, that if the 【B14】 of the world continues to rise at the present rate, in a few years, there will not be enough 【B15】 What can we do to solve these problems？
If we eat more vegetables and less 【B16】 , there will be more food available for anyone. Land that is used to grow crops 【B17】 five times more people than land where animals are kept.
Our natural resources will 【B18】 longer if we learn to recycle them. The world population will not rise so quickly if people use modem methods of birth 【B19】 .
Finally, ff we educate people to think about the problems, we shall have a better and cleaner 【B20】 in the future.
【B1】
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