卫生类A级：完形填空The Central Problem
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