【題目】Sleeping nine hours a night ________ children. Don't let them stay up late for studying.
A.is bad for
B.is good for
C.is good at
D.is bad to

【答案】B
【解析】句意:一個(gè)晚上睡九個(gè)小時(shí)對(duì)小孩是有益的。不要讓他們熬夜太晚學(xué)習(xí)。A、is bad for對(duì)……有害;B、is good for對(duì)……有益;C、is good at擅長(zhǎng);D、is bad to對(duì)……不好。根據(jù)句意可知多睡對(duì)兒童有益,所以答案是B。

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