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- 1若a(a+2)-(a的平方+2b)=10,求ab-(a的平方+b的平方)/2的值
- 2A、B两点在数轴上的位置如图,现A、B两点分别以1个单位/秒、4个单位/秒的速度同时向左运动. (1)几秒后,原点恰好在两点正中间? (2)几秒后,恰好有OA:OB=1:2?
- 3请问I know you better than he does.与I know you better than him.译法相同吗?
- 4Don't forget ( ) your guitar when you come to school A.to take B.taking C.to bring D.bringing
- 5黄河颂诗中赞美黄河磅礴气势的诗句是
- 6miss li is reading in the library 对reading提问怎么写
- 7how about _____(talk) a walk适当形式填空
- 81/根号下n的阶乘的极限咋求,用夹逼定理
- 9甲乙两数的和是31.24,甲数的小数点向左移动就等于乙数,甲乙两数分别是多少?
- 10有一个字分别和这些字“口,二,日,又,化,兄,音”合起来都能组成一个新的字,请问这个字是( )