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I'm the fourth of five children raised by a single mother in a rough neighborhood in Brooklyn, New York. 我是一位单身母亲五个孩子中的第四个,我们在纽约布鲁克林一个混乱的街区生活。 We never owned a home, a car, a w
Researchers are discovering more and more about the inner workings of the brain through MRI and PET scans. Both scans produce images of active, inactive, healthy, and unhealthy areas of the brain. These images are helping doctors treat brain dysfunct
VOICE ONE: This is SCIENCE IN THE NEWS in VOA Special English. I'm Steve Ember. VOICE TWO: And I'm Shirley Griffith. This week, we will tell about evidence that something big struck the planet Jupiter. We will also tell about a long ignored organ in
This is Scientific Americans Sixty-second Science. Im Cynthia Graber. This will just take a minute. Poor old spleen, it never got the recognition it deserved. Until now. Scientists had known that the spleen is part of our immune systems. But it was c
206. The spinal cord operation脊髓手术 spectra-sponge There was a lecture given at a medical school on a spinal cord operation. The professor began: In order to have a speedy but safe operation, one must speculate on the entire spectrum of possib
Reasons why premarital sex is unhealthy The risk of dying Everyone realizes having sex before marriage can have dangerous consequences. Even condoms避孕套 and other 'safe sex' devices, there is sti