Modern technology has put men on the moon and deciphered the human genome. But when it comes to brewing up flu to make vacc...

Recent years have brought minority-owned businesses in the United States unprecedented opportunities — as well as new and s...

1. The primary purpose of the text is to [A] present a commonplace idea and its inaccuracies. [B] describe a situation ...

1. 【答案】B 【考点解析】本题是一道中心主旨题。破解本题的关键在于考生是否完全理解本文第一段首句的内容，尤其是第一句中破折号后面的内容。破折号后面的内容和选项B中的 “its potential drawbacks”是相互吻合的。望考生注...

The fossil remains of the first flying vertebrates, the pterosaurs, have intrigued paleontologists for more than two centur...

Between the eighth and eleventh centuries A. D., the Byzantine Empire staged an almost unparalleled economic and cultural r...

Archaeology as a profession faces two major problems. First, it is the poorest of the poor. Only paltry sums are available ...

The majority of successful senior managers do not closely follow the classical rational model of first clarifying goals, as...

Bernard Bailyn has recently reinterpreted the early history of the United States by applying new social research findings o...

“I want to criticize the social system, and to show it at work, at its most intense.” Virginia Woolf’s provocative statemen...