六级英语

The economy of the United States after 1952 was the economy of a well-fed, almost fully employed people. Despite__1__alarms, the country escaped any postwar depression and lived in a__2__of boom. An e...

Computer Use in School EducationAccompanying the developments in computing as a subject for study there has been a corresponding growth in the use of the computer as an aid to teaching across the curr...

Growth of trade will depend greatly on availability of energy sources. There may still be a trillion barrels of recoverable oil in the Middle East. But the oil crisis of 1974 has ____1____to renewed i...

　For as long as humans have raised crops as a source of food and other products, insects have damaged them. Between 1870 and 1880, locusts ate millions of dollars’ worth of crops in the Mississipp...

　Computer Use in School EducationAccompanying the developments in computing as a subject for study there has been a corresponding growth in the use of the computer as an aid to teaching across the c...

Every day 25 million U. S. children ride school buses. The safety record for these buses is much better than for passenger cars; but nevertheless, about 10 children are killed each year riding on larg...

Hope is HealthyYou are about to go to the hospital for a routine surgical procedure. Which attitude is healthier?A. “I’d better find out everything I can about this operation—you can never know ...

Like most parents, geologist Brain Atwater worries about his daughter’s safety. But these days, he has an unusual concern; The public school she___1___ in Seattle has unreinforced brick walls, a ___...

What do we think with? Only the brain? Hardly. The brain is like a telephone exchange. It is the switchboard, but not the whole system. Its function is to receive incoming signals, make proper connect...

Laziness is a sin(罪), everyone knows that. We have probably all had lectures pointing out that laziness is immoral, that it is wasteful, and that lazy people will never amount to anything in life. B...