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- 1Lucy is___American girl.she is looking at__sun on the bus
- 2百分数的意义是什么?
- 3Shenzhen is one of the most beautiful cities in China(同意句)
- 4There is a little different between him and his father.He is a litter______ ______his father.
- 5如果在一个直径为0.5m的地球仪上的赤道上用铁丝打一圆箍,需要()m的铁丝.
- 6如上题.
- 7三个相邻的自然数的和是b 这三个自然数分别是多少
- 8已知tan(-a)等于1求sina加cosa/sina减cosa和sin2a的值
- 9如图,AB、AC分别是⊙O的直径和弦,OD⊥AB,与AC相交于点D,OD=5cm,求弦AC
- 10一氧化氮、二氧化氮与氨气的反应条件 具体催化剂分别是什么