Resources can be said to be scarce both in an absolute and in a 11 sense: the surface of the Earth is limited, 12 absolute scarcity, but the scarcity that concerns economists is the relative scarcity of resources in 13 uses. Materials used for one purpose cannot at the same time be used for other purposes; if the quantity of an input is limited, the increased use of it in one manufacturing process must cause it to become less available for other uses.
The cost of a product in 14 of money may not measure its true cost to society. The true cost of, say, the construction of a supersonic jet is the value of the schools and refrigerators that will never be built as a result. Every act of production uses up some of societys available resources; it means the foregoing of an opportunity to produce something else. In deciding how to use resources most effectively to 15 the wants of the community, this opportunity cost must 16 be taken into account.
In a market 17 the price of a commodity and the quantity supplied depend on the cost of making it, and that cost, ultimately, is the cost of not making other goods. The market mechanism enforces this 18 . The cost of, say, a pair of shoes is the price of the leather, the labor, the fuel, and other elements used up in producing them. But the price of these inputs, in turn, 19 on what they can produce elsewhere if the leather can be used to produce handbags that are valued highly by consumers, the price of leather will be bid up
20
A. fulfill B. correspondingly C.terms D. relative
E. imposing F. depends G.reverse H. ultimately
I. different J. relationship K.satisfy L. finance
M. considerably N. emphasizing O.economy
II. D 12. E 13. I 14. C 15. K 16. H 17. O 18. J 19. F 20. B
鹅妈妈童谣:一闪一闪亮晶晶
鹅妈妈童谣:摇篮摇啊摇,宝贝儿
一年级英语口语绝佳句型100句(1)
鹅妈妈童谣:我爱小猫咪
一年级英语口语绝佳句型100句(3)
小学英语口语:Come on
小学一年级英语口语练习:问答2
阶梯英语歌谣:在公园度过美好的一天
鹅妈妈童谣:蛋头先生的儿歌
小学一年级英语口语练习
鹅妈妈童谣系列集锦
鹅妈妈童谣:叮咚铃儿响
鹅妈妈童谣:星星闪,星星亮
鹅妈妈童谣:鞋匠,鞋匠,帮我补鞋
阶梯英语歌谣:变戏法
小学一年级英语口语练习:问答1
阶梯英语歌谣:盒子里有什么?
[OMG美语]剪头发 Get your hair done!
一年级英语学习口语教程:Seven
一年级英语学习口语教程:Eight
[OMG美语]来杯咖啡吧 coffee
阶梯英语歌谣:新单词
阶梯英语歌谣:苹果橙子番茄土豆
小学一年级英语口语练习:问答3
鹅妈妈童谣:到巴比伦有多少公里
阶梯英语歌谣:打招呼
鹅妈妈童谣:玛菲特小姐
一年级英语学习口语教程:Four
一年级英语学习口语教程:One
阶梯英语歌谣:15只小鸟
不限 |
英语教案 |
英语课件 |
英语试题 |
不限 |
不限 |
上册 |
下册 |
不限 |