渗灌即地下灌溉,它是利用地下管道将灌溉水输入埋设地田间地下一定深度的渗水管或鼠洞内,借助土壤毛管作用湿润土壤的灌溉方法。
参考答案:对
根据括号中的汉语、首字母或音标写出单词,使句子意思完整正确。(每空限填一词)
1. When I saw the model pyramids and the model Golden Gate Bridge, I couldn't _____ my eyes. (相信)
2. Sandy wants to become a _____ (著名的) singer and travel around the world.
3. American people like calling "film" _____ (电影).
4. There was a lot of _____ (车辆) on the city road. We'd better take the underground.
5. I decided to stay home and pack my bags i_____ (代替).
6. There is _____ (什么也没有) in the fridge. It's empty.
7. It's such an easy book. _____ (甚至) a child can understand it.
8. I was playing computer games the _____ (整个的) afternoon yesterday.
高处作业可以上下投掷工具和材料,所用材料应堆放平稳,必要时应设安全警戒区,并设专人监护。