题目内容
由河两岸向中央抛投进占，直至截断水流的截流方法是()
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支沟、集水井的深浅关系，一般应当是（ ）
围堰用来围护河床种基坑，保证水工建筑物施工在（ ）上进行。
迅速实现围堰（),迫使水流经泄水建筑物下泄，称为截流。
2. Blank-filling[音频]1. Where does Mark Hill work?He works on some of the busiest ___________ in Britain.2. How many accidents do the traffic police on each shift have to deal with?On average they have to deal with _________ accidents.3. Why do accidents happen according to Mark Hill?Because people ______________, which is the cause of most accidents, and because people sometimes don’t follow the rules.4. Why does Mark Hill like his job?He likes his job because it gives him a varied ____________ day.
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