credit cardOne hundred and thirteen million Americans have at least one bank-issued credit card. They give their owners automatic 1 in stores, restaurants, and hotels, at home, across the country, and...
shyAbout 40 percent of Americans think of themselves as shy, while only 20 percent say they have never suffered from shyness at some point in their lives. Shyness occurs when a person’s apprehensions ...
childhood memoryWhat is your earliest childhood memory? Can you remember learning to walk? Or talk? The first time you heard thunder or watched a television program? Adults seldom 1 events much earlie...
antioxidantsA potful of evidence suggests that the antioxidants and polyphenols in tea help protect you from stroke and heart attack, Alzheimer’s disease, arthritis, and cancers of the lung, mouth, br...
2016年考研英语阅读理解模拟练习及答案汇总12016年考研英语阅读理解模拟练习及答案(1)22016年考研英语阅读理解模拟练习及答案(2)32016年考研英语阅读理解模拟练习及答案(3)42016年考研英语阅读理解模拟练习及答案(4)52016年考研英语阅读理解模拟练习及答案(5)62016年考研英语阅读理解模拟练习及答案(6)72016年考研英语阅读理解模拟练习及答案(7)82016年考研英语...
Shortages of flu vaccine are nothing new in America， but this year’s is a whopper. Until last week， it appeared that 100 million Americans would have access to flu shots this fall. Then British author...
At 18， Ashanthi DeSilva of suburban Cleveland is a living symbol of one of the great intellectual achievements of the 20th century. Born with an extremely rare and usually fatal disorder that left her...
You hop into your car， but， wait， where are the keys? You meet someone new， but her name is gone before the handshake’s over. Those are failures of your short-term， or “working，” memory——the place you...
When Ellen M. Roche， 24， volunteered for the asthma experiment， she didn’t expect to benefit from it——except for the $365 she’d be paid. Unlike clinical trials， in which most patients hope that an exp...
Scientists have known for more than two decades that cancer is a disease of the genes. Something scrambles the Dna inside a nucleus， and suddenly， instead of dividing in a measured fashion， a cell beg...