表示在搜索中要同时包含两个以上关键字，应选用（）逻辑符连接。
A．not
B．or
C． and
D．near
参考答案：C
流行区系
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. "
