B. see in a weak light

　　C. kill mosquitoes

　　D. tell orange from yellow

　　66. Which of the statements about colour blindness is true?

　　A. Not all of them have the same problem in recognizing colours.

　　B. None of them can see deep red.

　　C. None of them can tell the difference between blue and green.

　　D. All of them see everything in shades of green.

　　D

　　In some children who go blind, certain parts of the brain that normally control vision appear to switch jobs and focus instead on sound, a new study has found.

　　The study, by researchers at the University of Montreal, involved 7 adults who could see and 12 adults who had lost their vision when they were children. Each participant sat in a room with 16 loudspeakers at different locations. The room was designed so that there were no echoes. During the experiment, the speakers irregularly produced sounds. Participants had to point to where the sounds were coming from. Meanwhile, the researchers monitored blood flow in the brains of the participants to see which brain structures were working during the task.

　　The results showed that five of the blind participants were very good at pointing to where sounds were coming from. In these people, blood flow increased in the visual cortex — an area at the back of the right side of the brain. This part of the brain is usually associated with vision.

【江苏省姜堰市张甸中学高三英语牛津依林版一轮复习：模块必修3《Unit 1 The world of our senses》单元仿真检测】相关文章：

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