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Researchers at Yale University Medical School and the Olin Neuropsychiatry Research Center at the Institute of Living in Hartfor

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问题     Researchers at Yale University Medical School and the Olin Neuropsychiatry Research Center at the Institute of Living in Hartford, Conn., have taken a pretty good look at what happens in the brain of a drunken driver. And it isn’t pretty.
    Using【C1】________ scans, the scientists compared the neural activity that【C2】________ on and off like lights on a police car as both sober【C3】________ game.
    The maps of activity in different areas of the brain【C4】________ in new detail the impact that drinking has on a complicated【C5】________ task such as driving.
    "No one had seen that in a scanner【C6】________ ," said Dr. Godfrey Pearlson, a Yale psychiatrist and director of the Olin Center.
    Pearlson and Vince Calhoun, a researcher at Yale and Olin, first conducted brain scans on【C7】________ drivers as they played the driving simulation game and then as they watched others play the game.
    Those scans gave the researchers a baseline of【C8】________ activity in the unimpaired driver.
    Subjects were then given a low dose or a high dose of booze—enough to get their blood alcohol content to either 0.04 percent or 0.10 percent.
    An inebriated driver often will speed because alcohol has affected the cerebellum, a primitive area of the brain involved in【C9】________ function, the researchers found. But drunken drivers【C10】________ in and out of traffic because of errors in the font parietal cortex, which translates sensory information and helps in the decision-making process, Pearlson said Drinking did not seem to change activity in five other areas of the brain associated with driving, such as vision centers, the researchers found.
    But to the surprise of no one, the more the subjects drank, the more trouble they had with their driving.
【C6】
选项 A、since
B、for
C、ever
D、before
答案D
解析 该句的意思是“以前没有人在扫描仪里见过那个”。能放在句尾的副词只有ever和before，根据句意应该选before。
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