用所给单词的适当形式填空。

1. Mary told me that she had been to China ____ (two).

2. Here are the results of the _____ (student) activity survey at Hilltop High School.

3. Can you tell me who is the _____ (healthy) student in your class?

4. My _____ (eat) habits are pretty good.

长期取俯卧位的卧床患者，最易发生压疮的部位是（）

A.面颊

B.大转子

C.髂前上棘

D.肩胛部

E.前额