The Central Problem of Economics
The central problem of economics is to satisfy the peoples and nations wants.
The problem we are faced with is that our resources, here identified as money, are __1__. The only way we can resolve our problem is to make choices. After looking at our resources, we must examine our list of __2__ and identify the things we need immediately, those we can postpone, and __3__ we cannot afford. As individuals, we face the central problem involved in economics-deciding just how to allocate our limited our limited resources to provide __4__ with the greatest satisfaction of our wants.
Nations face the same problem. As a countrys population ___5__, the need for more goods and services grows correspondingly. Resources necessary to production may increase, but there __6__ are enough resources to satisfy the total desires of a nation. Whether the budget meeting is taking place in the family living room, in the conference room of the corporation __7__ of directors, or in the chamber of the House of Representatives in Washington, the basic problem still exists. We need to find __8__ of allocating limited resources in order to satisfy unlimited wants.
A short time ago economists divided goods into two categories, free and economic. The former, like air and water, were in __9__ abundance that economists had no concern for them. After all, economics is the __10__ of scarcity and what to do about it. Today many of these free goods are __11__ very expensive to use. Pollution has made clean air and water expensive for producers extra costs, and __12__ taxpayers who pay for the governments involvement in cleaning the environment.
In the 1990s, almost all goods are __13__. Only by effort and money __14__ obtained in the form people wish.
Meeting needs of people and the demands from resource available __15__ the basic activity of production. In trying to meet unlimited wants from limited economic goods, production leads to new problems in economics.EXERCISE:
1. A) limited B) unlimited C) scarcity D) abundant
2. A) want B) problem C) wants D) resources
3. A) those B) some C) others D) many
4. A) them B) themselves C) ourselves D) ours
5. A) expand B) extends C) grows D) increase
6. A) always B) sometimes C) often D) never
7. A) management B) function C) board D) group
8. A) people B) economists C ) way D) methods
9. A) so B) great C) such D) such an
10. A) form B) study C) means D) source
11. A) practically B) in practice C)in reality D) practicably
12. A) the B) / C) for D) with
13. A) plentiful B) scarce C) abundant D) in full supply
14. A) they can be B) can they be C) they must be D) must they be
15. A) are led to B) leads C) lead to D) leads to
KEY:
A C A C C D C D C B C C B B D
I wish 后从句用虚拟语气的三种形式
比较if only与only if
同位语从句用法详解(例句丰富)
混合条件句
同位语边缘知识归纳
带虚拟语气宾语从句的四个数字
表语从句用法详解(例句丰富)
哪些动词接的宾语从句通常要用虚拟语气
虚拟语气用法详解
宾语从句用法详解(例句丰富)
英语基础语法——名词性从句
whether 和if引导名词性从句的区别
虚拟条件句的倒装
wish的用法
need 不必做和本不该做
使用名词性从句的两个注意点
名词性从句用法详解
It is time 后的定语从句用虚拟语气
非真实条件句
It is (high) time that
八种宾语从句不省略that
与将来事实相反的虚拟语气
真实条件句
宾语从句学习指要
虚拟语气
主语从句用法详解(例句丰富)
学习名词性从句的应注意的关键点
考查虚拟语气的一道妙题
that, why 与 because 引导表语从句时的区别
用过去式表示的虚拟语气
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