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The Deer’s
Death{{/B}} He ran close, and again stood still, stopped by a new fear. Around him the grass was whispering and alive. He looked wildly about, then down. The ground was black with ants, great energetic ants that took no notice of him, but hurried towards the fighting shape. And as he drew in his breath and pity and terror seized him, the beast fell and the screaming stopped. Now he could hear nothing but a bird singing, and the sound of the rustling (沙沙声) whispering ants. He peered over at the blackness that twitched with the jerking(抽搐) nerves. It grew quieter. There were small twitches from the mass that still looked vaguely like the shape of a small animal. It came into his mind that he could shoot it and end its pain; and he raised the gun. Then he lowered it again. Th A. It was already dead in the bush. B. It was still on its feet. C. It was lying on the ground dying. D. It was fighting the ants to a finish. 更多"{{B}}第二篇{{/B}} {{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}}
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