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- 1he broke his arm playing basketball yesterday and was sent to __.Aa hospital Bthe hospital Chospita
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- 3如果a等于b减4,那么5（a-b）的平方减9（a-b）减3（a+b)的平方加5（a-b)的值是多少?
- 4已知向量m(sinx,-cosx) n=（cosa,-sina）其中0
- 5一个长方形苗圃,长比宽多10米,沿着苗圃走一圈要走140米,这个苗圃占地（）平方米
- 612.—— you decide to do ,you should try to make it a success.
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- 8Where is your backpack.---Oh,I it on my desk.A.left B.forgot C.leave D.forget
- 9读音.露 lu 和露 lou 怎么区别啊?
- 10若x的平方加3x减去1等于0,则x的立方加5乘以x的平方加5x加18=多少