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你能帮帮他们吗
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解下列方程组:1.3x-y=5 5y-1=3x+5 2.2x/3+3y/4=1/5 5x/6-5y/2=2
1年前
Both of my sisters are teachers. One is a Chinese teacher, and ________ teaches English.
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韶关是国家首批生态文明建设先行示范区和广东绿色生态第一市,全力筑牢粤北生态屏障,下列措施不利于“筑牢粤北生态屏障”的是( )
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Assistant: Can I help you? Mum: Yes, please. I want to buy a pair of sneakers(网球鞋) for my son.
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