触诊对全身哪个部位的检查最重要
A．头颈部
B．胸部
C．腹部
D．四肢
E．皮肤
参考答案：C
已知函数f（x）=x2+t的图象与函数g（x）=ln|x|的图象有四个交点，则实数t的取值范围为______．
My father smoke heavily, but now he doesn't smoke any more. [ ]
A. use to
B. was used to
C. used to
D. was used
