On average, American kids aged 3 to 12 spent 29 hours a week in school, eight hours more than they did in 1981. They also did mo

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问题     On average, American kids aged 3 to 12 spent 29 hours a week in school, eight hours more than they did in 1981. They also did more household work and participated in more of such organized activities as soccer and ballet (芭蕾舞). Involvement in sports, in particular, rose almost 50% from 1981 to 1997: boys now spend an average of four hours a week playing sports; girls log half that time. All in all, however, children’s leisure time dropped from 40% of the day in 1981 to 25 %.
    "Children are affected by the same time crunch (危机) that affects their parents," says Sandra Hofferth, who headed the recent study of children’s timetable. A chief reason, she says, is that more mothers are working outside the home. (Nevertheless, children in both double-income and "male breadwinner" households spent comparable amounts of time interacting with their parents, 19 hours and 22 hours respectively. In contrast, children spent only 9 hours with their single mothers. )
    All work and no play could make for some very messed-up kids. "Play is the most powerful way a child explores the world and learns about himself," says T. Berry Brazel-ton, professor at Harvard Medical School. Unstructured play encourages independent thinking and allows the young to negotiate their relationships with their peers, but kids aged 3 to 12 spent only 12 hours a week engaged in it.
    The children sampled spent a quarter of their rapidly decreasing "free time" watching television. But that, believe it or not, was one of the findings parents might regard as good news. If they’re spending less time in front of the TV set, however, kids aren’t replacing it with reading. Despite efforts to get kids more interested in books, the children spent just over an hour a week reading. Let’s face it, who’s got the time? (310 words)
According to the author, the reason given by Sandra Hofferth for the time crunch is______.

选项 A、quite convincing
B、partially true
C、totally groundless
D、rather confusing

答案B

解析 本题属于细节理解题。理解该细节的关键是第二段中括号中的句子:“(然而,父母都工作和只有父亲出去工作的家庭的孩子都花相当多的时间和他们的父母交流:分别是平均每周19小时和22小时。相比之下,单亲母亲的孩子平均每周只花9小时与其母亲交流。)”这是作者针对桑多拉·霍夫思前一、二句话观点所举的例子。显然,B“部分真实”为正确答案。
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