{{B}}Attitudes to AIDS Now{{/B}} Most people say that the USA is making progress in fighting AIDS, but they don’t know there’s no cure and strongly disagree that "the AIDS epidemic is over," a new survey finds. The findings, released Thursday by the Kaiser Family Foundation, reassure activists who have worried that public concern about AIDS might disappear in light of recent news about advances in treatment and declines in deaths. "While people are very optimistic about the advances, they’re still realistic about the fact that there is no cure", says Sophia Chang, director of HIV programs at file foundation. The Kaiser survey, like a recent USA TODAY Gallup Poll, does find that the number of people ranking AIDS as the country’s top health problem has A. who suffer from the worst disease — AIDS has fallen. B. who think AIDS threatens the countryside has fallen. C. who worry about AIDS and health problems has fallen. D. who think AIDS is the country’s top health killer has fallen. 更多"{{B}}第二篇{{/B}}"的相关试题: [单项选择]第二篇
Mind-reading Machine
A team of researchers in California has developed a way to predict what kinds of objects people are looking at by scanning (扫描) what’s happening in their brains.
When you look at something, your eyes send a signal about that object to your brain. Different regions of the brain process the information your eyes send. Cells in your brain called neurons (神经元) are responsible for this processing.
The fMRI (functional Magnetic Resonance Imaging) (功能性磁振造影) brain scans could generally match electrical activity in the brain to the basic shape of a picture that someone was looking at.
Like cells anywhere else in your body, active neurons use oxygen. Blood brings oxygen to the neurons, and the more active a neuron is, the more oxygen it will consume. The more active a region of the brain, the more active its neurons, and in turn, the more blood will travel to that region. And by using fMRI, scientist
A. The magnetic system in the brain. B. The central part of the heart. C. Oxygen-rich blood. D. Neurons in the brain. [单项选择]{{B}}第二篇{{/B}}
|