若C=x∈N|x≤10，则（）．
A.选项A
B.选项B
C.选项C
D.选项D
参考答案：D
解析：
8是元素，且属于集合C．故选D．
A 22-year-old client is diagnosed with dependent personality disorder. Which behavior is most likely to indicate her ineffective coping
A. Inability to make choices and decisions without advice.B. Showing interest only in solitary activities.C. Avoiding developing relationships.D. Recurrent self-destructive behavior with history of depression.
企业战略实施的模式中，采用变革型模式，企业高层领导重点考虑的是（）。
A.如何制定一个最佳的战略
B.如何实施战略
C.如何进行文化宣传
D.如何正确评判下层的各种建议，淘汰不适当的方案
