题目

阅读下面的文字，完成下面小题。材料一:我国是一个水资源贫乏的国家，被列为世界上13个最贫水国之一。我国人均水资源占有量约为2，100立方米，仅相当于美国的1/5。同时，在我国，38%的耕地分布在西北、华北、东北等北方地区，而干旱少雨导致我国北方地区水资源比较缺乏。在西北，50%以上的上土地没有灌溉就没有农业，而其他地区的土地没有灌溉就不能保证粮食稳产、高产。我国农田灌溉水有效利用系数仅为0.53，运低于发达国家0.80的平均水平补全对话A. I often play games on the computer.B. Have you got a computer at home?C. I have computer science every week.D. I usually do my homework.E. I have got some English books.F. But my favourite subject is English.G. When do you play them？A: Hi, Sam.B: Hi, Martin.A: _________1.B: Yes.A: What do you usually do on the computer?B: __________2.A: Do you play computer games?B: Sometimes.A: __________3.B: On Sundays.A: How often do you learn to use the computer?B: _________4.A: Is it your favourite subject?B: Oh, I like it. ________5.A: I like English, too.