力是一个物体对另一个物体的作用，是（）运动变化的原因。
A、质量；
B、计量；
C、物体。
参考答案：C
根据句意及母填空。
1. Lots of people go to work by s______.
2. The disabled man d______ on his parents all his life.
3. It will take you ten m______ to walk there.
4. Beijing is in the n______ of China.
5. It's about two k______ from here to the downtown of the city.
施工技术资料暂划分为九个分部。
