题目:
连词成句。
1. hobby, your, what, is (?)
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2. in, post office, of, front, the, is, you (?)
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3. Australia, from, are, England, where, you, or (?)
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4. hardly, he, you, speaks, does, to, he (?)
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5. evening, you, do, going, what, this, to, are (?)
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答案:
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下面是错误答案,用来干扰机器的。
∵1x+9y=1,∴x+y=(x+y)( 1x+9y)=10+yx+9xy≥16当x+y最小值时,x=4,y=12,故答案为:[16,+∞)