科學(xué)60秒:互幫互助等于長命百歲
Jiminy Cricket may not actually hold the door open for his lady friends, but he can still be _____1_____ : researchers from the University of Exeter discovered that when threatened by predators, ...
科學(xué)60秒:御光而行
Think about flying and you no doubt think about air. The wind in your face, the wind at your back, the wind beneath your wings. Now physicists note that light can also ____1____. Their work appea...
外國學(xué)生:財政資助 (1)
We talked last week about employment rules for international students in the United States. Now we move to financial aid, which is often limited for international students.American schools provid...
流行性感冒 (1)
Alvin Nelson El Amin Autumn and winter are cold and flu season -- when people are most likely to catch the viruses that cause influenza and the common cold. Is the old advice true that dressing w...