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- 2学校合唱队有54人,比田径队人数多50%,学校田径队有多少人?两个队共有多少人?
- 3They arrived there _B__of year.A.at bad time B.at a bad timeC.at the bad time D.on a bad time 选什
- 4已知函数f(x)=ax的三次方+bx的平方+cx+a的平方 (a,b,c属于R)的单调递减区间(1,2),且满足f(0)=1..
- 5把下列各组分数按从小到大的顺序排列起来.2分之1,6分之5和8分之3.4分之3,12分之5和5分之2.
- 6what do you think make Mary so sad?___in the exam ,i think
- 7求英语作文一篇,I have a dream 要拿来演讲,越长越好!
- 8如果24分之2x减7是最简真分数,那么x可以是哪些数
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- 10改错题:Does your sister go to school by her bike every day?