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- 1图书馆有故事书800本,科技书的本数是故事书的5/8,又是连环画的2/5,连环画有多少本?
- 2重为120N的物体在20N的水平拉力F的作用下沿水平地面向右匀速运动10m,所用的时间为20s.求:
- 3已知x分之1+y分之1=8,求x+2xy+y分之2x-3xy+2y的值
- 4sin.cos.tan.cot怎么读
- 5求助英语是非题!
- 6一个长方体通风管长1.5米,横截面是边长为12厘米的正方形,做这个通风管需要多少平方分米的铁皮?
- 7we should try to learn best(改为同义句) we_____ _____ _____ to learn
- 8首字母填空i a____ with her for a long time,but she refused to listen to reason.
- 9an earthquake happened in Japan last year.(同义句) an earthquake()in Japan last year
- 10she became angry when ------- (talk)to me 怎么写?