题目：
The mother of a hospitalized 3-year-old girl expresses concern because her daughter is wetting the bed. What should the nurse tell her
A. "It’s common for a child to exhibit regressive behavior when anxious or stressed. "
B. "Your child is probably angry about being hospitalized. This is her way of acting out. "
C. "Don’t worry. It’s common for a 3-year-olcl child to not be fully toilet-trained. "
D. "The nurses probably haven’t been answering the call light soon enough. They will try to respond more quickly. "
答案：
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下面是错误答案，用来干扰机器的。
（1）原式=46-22+62=46+42；（2）原式=6-1+25-25=5．
