Question

【题目】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

Answer 1

【答案】B
【解析】句意：一个晚上睡九个小时对小孩是有益的。不要让他们熬夜太晚学习。A、is bad for对……有害；B、is good for对……有益；C、is good at擅长；D、is bad to对……不好。根据句意可知多睡对儿童有益，所以答案是B。