用括号内所给单词的适当形式填空，每空格限填一词。

1. There are many fresh _____ (potato) in the supermarket.

2. Their apartment is on the _____ (seven) floor of the building.

3. The university student came back to his hometown and became a new _____ (village).

4. _____ (lucky), Fred was not hurt in the car accident.

5. Miss Zhou is very popular in our school. She is a _____ ( success) teacher.

躯体感觉冲动和视觉冲动均不存在或出现错误时，身体平衡的维持主要依靠（）。

A.躯体感觉系统

B.视觉系统

C.前庭系统

D.骨骼肌系统

E.姿势控制中的预备性活动