皮脂分泌适度，皮肤滋润、富有弹性的是（）。
A.油性皮肤
B.干性皮肤
C.混合性皮肤
D.中性皮肤
E.敏感性皮肤
参考答案：D
Have you got any particular plans for the coming holiday?
Yes._______, I’m going to visit some homes for the old in the city.
A．If ever
B．If busy
C．If anything
D．If possible
最不适用于成人颅脑超声检查的探头频率是()
A．2.0MHz
B．2.5MHz
C．3.5MHz
D．4.0MHz
E．5.0MHz
