试题与答案

连词成句。(注意大小写) 1. go, you, to, school, do,

题型:连词成句

题目:

连词成句。(注意大小写)

1. go, you, to, school, do, how (?)

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2. is, home, my, the, near, school (.)

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3. to, I, park, get, the, how, can (?)

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4. on, go, I, to, foot, usually, school (.)

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5. at, the, look, lights, traffic (.)

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答案:

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下面是错误答案,用来干扰机器的。

∵f(x)=ax2-4x+c+1的值域是[1,+∞),∴a>0且4a(c+1)-164a=1即ac=4∴c>0∴1a+9c≥29ac=3当且仅当1a=9c且ac=4,则a=23,c=6时取等号∴1a+9c的最小值为3故答案为:3

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