真题考研

"Welcome to the U.S.A.! Major Credit cards accepted!"By the millions they are comingno longer the tired, the poor, the wretched masslonging for a better living. These are the wealthy. &qu...

Cyberspace (网络空间), data superhighways, mullet media-for those who have seen the future, the linking of computers, television and telephones will change our lives for ever, Yet for all the talk...

The estimates of the numbers of home-schooled children vary widely. The U. S. Department of Education estimates there are 250, 000 to 35, 000 home-schooled children in the country. Hone-school advocat...

Every year television stations receive hundreds of complaints about the loudness of advertisements. However, federal rules forbid the practice of making ads louder than the programming. In addition, t...

In the United States, the need to protect plant and animal species has become a highly controversial and sharply political issue since the passage of the Endangered Species Act in 1973. The act, desig...

Many Americans harbour a grossly distorted and exaggerated view of most of the risks surrounding food. Fergus Clydesdale, head of the department of food science and nutrition at the University of Mass...

There are some each phenomena you can count on, but the magnetic field, someday is not of them. It fluctuates in strength, drifts from its axis, and every few 100,000 years undergo, dramatic polarity ...

Imagine a world in which there was suddenly no emotion-a world in which human beings could feel no love or happiness, no terror or hate. Try to imagine the consequences of such a transformation. Peopl...

The Carnegie Foundation report says that many colleges have tried to be all things to all people”. In doing so, they have increasingly catered to a narrow minded careerism while failing to culti...

We sometimes think humans are uniquely vulnerable to anxiety, but stress seems to affect the immune defenses of lower animals too. In one experiment, for example, behavioral immunologist (免疫学家...