2. 考研
  3. In that mythical era【B1】______children were seen and not heard, and did【B2】______they were told without【B3】______, everyone knew

In that mythical era【B1】______children were seen and not heard, and did【B2】______they were told without【B3】______, everyone knew

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问题     In that mythical era【B1】______children were seen and not heard, and did【B2】______they were told without【B3】______, everyone knew that【B4】______bedtimes were important. " Dream on!" Most modern parents【B5】______reply. But research by Yvonne Kelly of University College, London, shows that the ancient wisdom is right-half the time. Daughters, it seems, do【B6】______from regular bedtimes. Sons do not.
    Dr. Kelly knew【B7】______many studies that had looked at the【B8】______between sleep habits and cognitive ability in adults and adolescents. All showed that【B9】______sleeping schedules【B10】______hand in hand with poor academic【B11】______Surprisingly,【B12】______, little such research had been done on children. She and her colleagues therefore examined the bedtimes and cognitive abilities of 11,178 children who are【B13】______in a multidisciplinary research project.
    The bedtime information they used was【B14】______during four visits interviewers【B15】______to their homes. These happened when the children were nine months, three years, five years and seven years of age. They were asked whether they had set bedtimes on weekdays and if they always, usually, sometimes or never made them. They were also asked to take tests from【B16】______their IQs could be estimated.
    Kelly’s report shows that when children had reached the age of seven,【B17】______a regular bedtime did seem to affect their cognition. But that was true only to female. On the IQ scale, whose mean value is 100 points, girls who had had regular bedtimes scored between eight and nine points more than those who did not. Boys were not completely【B18】______Irregular bedtimes left their IQs about six points below those of their【B19】______at the age of three. But the distinction【B20】______by the time they were seven.  
【B7】
选项 A、from
B、of
C、apart
D、backwards
答案B
解析 本题要求考生了解动词know组成的不同短语的意思。该句是本段首句，起承上启下的作用，上段提到Kelly的研究，本段进一步引申。从文中可知Kelly博士熟知许多研究，因此选项[B]正确。
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