The biologists discovered that the skin of the shark is the key to the animal’s high efficiency in swimming through the water. The skin contains many fibers that crisscross like the inside of a belted radial tire. The fibers are called collagen fi...
①While 1%may seem 6,it is not so to a geneticist.②As James Fowler,professor of medical genetics at UC San Diego,says,“Most people do not even 7 their fourth cousins but somehow manage to select as friends the people who 8 our kin.” ...
“value” for the last 13 years – so long that people are asking me whether it’s going to be a permanent condition. My extensive discussions with Andrew led me to conclude that the focus on value versus growth doesn’t serve investors well in the...
1. Why doesn’t John go to school today? A. It’s the weekend. B. He’s too tired for school. C. His school is closed down. 2. What will the man do tomorrow morning? A. Give Frank a bath. B. Cook Frank a meal. C. Take Frank to a vet...
Just as people pair off according to looks, so they do for size. Lean people are more likely to marry lean an d fat more likely to marry fat. On its own, like marrying like cannot account for any increase in obesity. But combined with others- parti...
更多内容请点击:大学英语四级全真模拟冲刺试题一 附答案