Every human being has unique arrangement of skin on his fingers and this arrangement is unchangeable. Scientists and experts have proved the 1 of finger-prints and discovered that no 2 similar pattern
When television first began to expand, very few of the people who had become famous as radio commentators were equally effective on television. Some of the 1 they experienced when they were trying to
Plowing through the New York Times on a recent Sunday， I read in the Metro Section that infertile couples in the market for smart-kid genes regularly place advertisements in the newspapers of their ow
Plowing through the New York Times on a recent Sunday， I read in the Metro Section that infertile couples in the market for smart-kid genes regularly place advertisements in the newspapers of their ow
The once radical notion that birds descended from dinosaurs——or may even be dinosaurs， the only living branch of the family that ruled the earth eons ago——has got stronger and stronger since paleontol
As you read this， nearly 80，000 Americans are waiting for a new heart， kidney or some other organ that could save their life. Tragically， about 6，000 of them will die this year——nearly twice as many p
Scientists have known since 1952 that DNA is the basic stuff of heredity. They’ve known its chemical structure since 1953. They know that human DNA acts like a biological computer program some 3 billi
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Music comes in many forms; most countries have a style of their own. __1__the turn of the century when jazz (爵士乐) was born, America had no prominent__2__of its own. No one knows exactly when jazz was_
The family is the center of most traditional Asians’ lives. Many people worry about their families welfare, reputation, and honor. Asian families are often 1, including several generations related by