下列事件中发生化学变化的是[ ]
A.西瓜榨成汁
B.利用干冰人工降雨
C.木材劈成块
D.植物光合作用
答案:D
Her father usually does ________ after dinner, such as does the dishes, sweeps the floor, takes out the
trash and so on. [ ]
A. chores
B. shopping
C. exercise
在现场检查时,同上一班检查工具房配件、工具摆放是否达标,()文明生产有无问题,巷道顶帮支护是否可靠。
A.周围
B.车场
C.工具房内
D.责任范围