Passage One

Questions 21 to 25 are based on the following passage.

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 dropout 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.

Most of us，when we reached our teens，started looking forward to the day when we would occupy places of our own，far from the confines of our families. We saw this moving away as a chance to strike out on our own，to grow，to spread out wings and experience freedom. At the same time，we regarded this independence as temporary-the thing to do until we found the perfect mate and married. Over the years，many millions of people have made this passage from one family to another，with just a brief，often nervous interval of independence in between. But recently，more and more people have begun to challenge the concept that living together is better than living alone. Being single is now accepted as an alternative lifestyle-one that is natural，rewarding，and complete. In fact，being single has become almost fashionable.

它能经受时间的考验。

我们系的每个学生都喜欢课外活动。

科学家们将必须提出增加世界粮食供应的新方法。

格林先生退休后，由他的儿子接管他的生意。

不论她如何说，我也不相信这个消息。

Animal research is irrelevant to our health and it can often produce______(mislead)results.

______(salary)people who earn more than a few thousand dollars must pay a certain percentage of their salaries.

Facts are terrible things if______(leave)spreading and unexamined.

As with anything______(carry)to excess，daydreaming can be harmful.