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绿豆粥是夏季消暑解渴的佳品。从结构层次上看,其原料绿豆属于植物体的
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1年前
The teacher asked me to ____ the exercise books before we began to do our homework.
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Halloween falls on October 31st. It is one of the most favourite holidays for children in the USA.
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用卡诺图化简法求F的最简与或和最简或与表达式 F(A,B,C,D)=∑m(0,2,7,13,15)+ ∑d(1,3,4,5,6,8,10)
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