拆装螺栓时，用活扳手代替加力杆，易滑脱伤手（）
参考答案：对
3. Is it snowy? What colour is snow?
In order to keep healthy, you should eat _____ fast food and _____ fresh vegetables, and take enough exercise. [ ]
A. fewer; fewer
B. less; more
C. fewer; more
D. less; less
