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先化简,再求值:(1)7x2-3x2﹢(5x2-2),其中x=2,(2)6ab-2(-3b+2a)+3(-2ab-5a)
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关于家用电路跳闸的问题公司宿舍有5间房子,每间房子各自都有防短路保险开关,然后5间房子又共用一个总的防短路保险开关.现在
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There are many old or new books in it.It's big.You can r
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It was not until midnight____the camp site as planned.
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求教会员卡使用条例的英文解释.1.凭此卡在本店购买正价商品可享9折优惠.2.必须有办卡人持卡消费,不得转借.3本卡有效期
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Only one child of the thirty passengers in the plane _____ after the air crash.
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When asked ____ they needed most, the kids said they wanted to feel loved.
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在同一平面直角坐标系中,一次函数y=ax+b和二次函数y=ax2+bx的图象可能为
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Difficulties are nothing _____we are not afraid of them.
1年前
我很喜欢说唱歌曲,但就是不会填词! 怎么想都想不出来, 能帮一下我吗?
1年前