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- 1The boy is very young.He can't go to school.(合并一句) The boy isn't _______ ________ ______
- 2等腰梯形的腰与中位线相等,周长为56cm,则腰长为
- 3They are have a good time on the hill.同义句 They are ___ ___ on the hill.
- 4急 各位懂化学的哥哥姐姐快点帮忙!某O2与NH3的混合气体平均式量为27.0 则O2与NH3的物质的量比为多少?
- 5六年级数学题!1送100分
- 6同义句Can you tell me how I can learn English well
- 7did you ( ) the station on time?A get B arrive C reach D arrvied at
- 8(四分之三减四分之三乘六分之五)除以二分之三等于多少
- 9一个土字旁一个奴隶的隶,左右结构,谁能告诉我这个字念什么?
- 10已知平面上有四点O A B C 满足向量OA+OB+OC=0向量,向量OA*OB=OB*OC=OC*OA=-1,则三角形ABC的周长是多少?