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- 1一个农场计划在100公顷的地里播种60公顷大豆和40公顷玉米.(1)大豆的播种面积占这块地的几分之几?(2)
- 2In many countries in the world ,all school children have to do one hour of exercise every day
- 3长方体ABCD-A1B1C1D1中,AB=5,BC=4,BB1=3,求AB与DB1的距离
- 4To some people gambling isnever lawful,although it may be legal in some place怎么翻译
- 5文章标题是济南的冬天,但结尾却是这就是冬天的济南.怎么理解?
- 6英语翻译
- 7they have decided that they (won,t take)up the job.为什么主句是过去,从句不用过去
- 8一辆汽车3小时行了135千米,一架飞机飞行的速度是汽车的28倍还少60千米,这架飞机每小时行多少千米?
- 9在反应A+3B=2C+2D中,A和B的相对分子质量之比为9:11,已知1.8gA与一定量B恰好完全反应,生成5.1gD,则在此反应中B和C的质量比为( ) A.2:1 B.3:4 C.12:11 D.1:1
- 102的2012次方减2的2011次方减2的2010次.减2的3次方怎样算