Passage OneQuestions 56 to 60 are based on the following passage.3D glasses help doctors perform invasive surgery when their hands are obscured from view.Moviegoers aren’t the only ones wearing 3D g
In recent years, teachers of introductory courses in Asian American studies have been facing a dilemma nonexistent a few decades ago, when hardly any texts in that field were available. Today, excelle
A controversy erupted in the scientific community in early 1998 over the use of DNA (deoxyribonucleic acid ) fingerprinting in criminal investigations. DNA fingerprinting was introduced in 1987 as a m
2016年下半年英语六级阅读模拟试题及答案汇总12016年下半年英语六级阅读模拟试题及答案122016年下半年英语六级阅读模拟试题及答案232016年下半年英语
Newdays, a standard for measuring power has changed. These changes foretell a new standard for measuring power. No longer will a nation’s political influence be based solely on the strength of its m
Trees should only be pruned when there is a good and clear reason for doing so and, fortunately, the number of such reasons is small. Pruning involves the cutting away of obergrown and unwanted branch
A scientific panel convened by the World Health Organization recommended guidelines on Friday for doctors conducting clinical studies of SARS patients. The panel urged doctors to apply the guidelines
Look at the keyboard of any standard typewriter or computer. “Q,“ “W,“ “E,“ “R,“ “T“ and “Y“ are the first six letters. Who decided on this arrangement of the letters? And why?
We all know that the normal human daily cycle of activity is of some 7-8 hours’ sleep alternation with some 16-17 hours’wakefulness and that, broadly speaking, the sleep normally coincides with th
It is estimated that some seven hundred million people - about half the world’s population - are unable to read and write, and there are probably tow hundred and fifty million more whose level of at