阅读下列短文，从每题所给的四个选项（A，B，C和D）中，选出最佳选项。

　　When your parents advise you to“get an education”in order to raise your income they tell you only half the truth. What they really mean is to get just enough education to provide manpower for your society but not so much that you prove an embarrassment to your society.

　　Get a high school diploma at least. Without that you will be occupationally dead unless your name happens to be George Bernard Shaw or Thomas Alva Edison and you can successfully drop out in grade school. Get a college degree if possible. With a B. A. you are on the launching pad. But now you have to start to put on the brakes. If you go for a master's degree make sure it is an M. B. A% . and is famous law of diminishing returns begins to take effect.

　　Do you know for instance that long haul truck drivers earn more per year than full professors? Yes the average 1977 salary for those truckers was $ 24 000. While the full professors managed to earn just $ 23 030. A Ph. D. is the highest degree you can get. Except for a few specialized fields such as physics or chemistry where the degree can quickly be turned to industrial or commercial purposes if you pursue such a degree in any other field you will face a dim future. There are more Ph. D. s unemployed or underemployed in this country than any other part of the world.

　　If you become a doctor of philosophy in English or history or anthropology (人类学) or political science or languages or worst of all in philosophy(哲学) you run the risk of becoming overeducated for our national demands. Not for our needs mind you but for our demands. Thousands of Ph. D. s are selling shoes driving cars waiting on table and endlessly filling out applications month after month. They may also take a job in some high school or backwater college that pays much less than the janitor(看门人) earns.

　　You can equate the level of income with the level of education only so far. Far enough that is to make you useful to the gross national product but not so far that nobody can turn much of a profit on you.

1．According to the writer what the society expects of education is to turn out people who ________.

[　　]

A．will not be a disgrace to society

B．will become loyal citizens

C．can take care of themselves

D．can meet the nation's demands as a source of manpower

2．Many Ph. D. s are out of job because ________.

[　　]

A．they are improperly educated

B．they are of little commercial value to their society

C．there are fewer jobs in high schools

D．they prefer easier jobs that make more money

3．The nation is only interested in people ________.

[　　]

A．with diplomas

B．who specialize in physics and chemistry

C．who are valuable to the gross national product

D．both A and C

4．Which of the following is NOT true?

[　　]

A．Bernard Shaw didn't finish high schools nor did Edison.

B．One must think carefully before pursuing a master degree.

C．The higher your education level the more money you will earn.

D．If you are too well-educated you'll be overeducated for　society's demands.

5．The writer sees education as ________.

[　　]

A．a means of providing job security and financial security and a means of meeting a country's demands for technical workers

B．a way to broaden one's horizons(见识)

C．more important than finding a job

D．an opportunity that everyone should have