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- 2环保小诗歌(40字左右)
- 3功放上这几个按钮什么意思
- 4甲、乙两人原来在银行的存款数相同,现在乙从银行取出2000元,甲存入银行7000元,这时甲的存款数是乙的4倍.现在甲存款数是_元,乙存款数是_元.
- 5在△ABC中,∠A>∠B,CD⊥AB,垂足为D,点D在AB上,若△ACD与△BCD相似,则∠ACB等于( ) A.90° B.120° C.60° D.不能确定度数
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- 9如何证明三角形三个内角的平分线交于一点
- 10It’s very friendly ( ) your teacher to come to see your sick mother.