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  3. In families with two working parents, fathers may have more impact on a child’s language development than mothers, a new study s

In families with two working parents, fathers may have more impact on a child’s language development than mothers, a new study s

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问题     In families with two working parents, fathers may have more impact on a child’s language development than mothers, a new study suggests.
    Researchers【B1】______92 families from 11 child care centers before their children were a year old, interviewing each to establish income, level of education and child care arrangements overall, it was a group of well-educated middle-class families, with married parents both living in the home.
    When the children were 2, researchers videotaped them at home in free-play sessions with both parents, 【B2】______all of their speech. The study will appear in the November issue of the Journal of Applied Developmental Psychology.
    The scientists measured the【B3】______number of utterances(话语)of the parents, the number of different words they used, the complexity of their sentences and other【B4】______of their speech. On average, fathers spoke less than mothers did, but they did not differ in the length of utterances or proportion of questions asked.
    Finally, the researchers【B5】______the children’ s speech at age 3, using a standardized language test. The only predictors of high scores on the test were the mother’ s level of education, the【B6】______of child care and the number of different words the father used.
    The researchers are【B7】______the father’s speech, and not the mother’s, had an effect.
    "It s well【B8】______that the mother’s language does have an impact, " said Nadya Pancsofar, the lead author of the study. It could be that the high-functioning mothers in the study had【B9】______had a strong influence on their children’s speech development, Ms. Pancsofar said, "or it may be that mothers are【B10】______in a way we didn’ t measure in the study. "
A. already
B. analyzed
C. aspects
D. contributing
E. established
F. quality
G. quoted
H. recording
I. recruited
J. total
K. unconscious
L. unsure
【B1】
选项
答案I
解析 分析句子结构可知，此处缺少谓语动词。从“before their children were a year old”来看，谓语动词应该用过去式。结合文意判断只有I最符合，意为研究人员招募研究对象。从语法上看，analyzed和quoted均符合条件，但analyzed为“分析”之意，quote为“引用”之意，与所在语句句意不符。
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