四六级考试

【单选题】When they advise your kids to "get an education" if you want to raise your income, they tell you only half the truth. What they really mean is to get just enough education to provide man power for your society, but not too much that you prove an embarrassment to your society.
Get a high school diploma, at least. Without that, you are occupationally dead, unless your name happens to be GeorgeBernard Shaw or ThomasAlvaEdison and you can successfully drop out in grade school.
Get college degree, if possible. With aB、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 only from a first-rate university.Beyond this, the famous law of diminishing returns begins to take effect.
Do you know, for instance, that ordinary truck drivers earn more a year than full professors Yes, the average salary for those truckers was $24,000, while the full professors managed to average just $23,930.
A、Ph.D、is the highest degree you can get, but except in a few specialized fields such as physics or chemistry, where the degree can quickly be turned to industrial or commercial purposes, you are facing a dim future. There are more Ph.D、s unemployed or underemployed in this country than in any other part of the world by far. If you become a doctor of philosophy inEnglish or history or anthropology or political science or languages or--worst of all--in philosophy, 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 cabs, waiting on tables and filling out fruitless applications month after month.And then maybe taking a job in some high school or backwater college that pays much less than the janitor 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.
The law of diminishing returns is manifested by the fact that ______
A、the elder generations earn less than their children’s generations
B、ordinary truck drivers have to work harder than full professors
C、a college diploma is more promising than a high school diploma
D、people with aB、A、earn more than those with a doctor’s degree
网考网参考答案：D
网考网解析：
从第4段的例子可以推断第3段最后一句提到的the law of diminishing returns意为：受教育越多，收入越少。据此判断，可知D为正确的说法。A的信息点没有在原文提及：原文对比了truck drivers和fullprofessors的收入，并没有对比他们谁的工作更辛苦，因此B不正确；在大学毕业之前，收入是与受教育程度成正比的，C就符合这种说法，但这并不属于“收益递减规律”。故C也不正确。 document.getElementById("warp").style.display="none"; document.getElementById("content").style.display="block"; 查看试题解析出处>>