But Bowlby's analysis raises the possibility that early day care had delayed effects. The possibility that such day care might lead to, say, more mental illness or crime 15 to 20 years later can only be found out by the use of statistics. Whatever the long­term effects, parents sometimes find the immediate effects difficult to deal with. Children under three are likely to refuse to leave their parents and show unhappiness. At the age of three or three and a half almost all children find the changing from home to nursery(kindergarten) easy, and this is undoubtedly why more and more parents make use of day care at this time. The matter, then, is far from clear, though experience and available evidence indicate that early day care is reasonable for babies.

　　本文讨论了幼儿健康问题。就三岁前的儿童是否应该与父母待在一起这一问题，科学家们发表了各自的看法。

　　5．In which of the following statements does “scar” have the same meaning as the underlined word “scar” in the

　　first paragraph?

　　A. Harry Potter is an ordinary boy with a scar on his forehead.

　　B. The divorce of his parents scarred the boy, which he couldn't get over for many years.

　　C. The cut on his face scarred over very soon.

　　D. After the students' graduation, the school usually finds the tables scarred with their names.

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