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- 3证明:四个连续整数的积加上1是一个整数的平方.
- 4足球football的场地是field还是pitch?
- 5因式分解 (x²-1)²+6(1-x²)+9 ax²-4ax+4a 25+(a+2b)²-10(
- 6表达自己对母校的深厚感情的诗句
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- 8They had a great time on that day.(变感叹句)___________________________they had on that day
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- 10解不等式2x+3分之5减1大于等于2括号x-1