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- 4_l live,l will never give in to the enemy.
- 5The man is a very ______person.(success)
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- 7用边长20厘米的方砖铺一块地,需要2000块,如果改用边长为40厘米的方砖铺地,需要多少块?
- 8若方程(-x+4)+10(x-3)=-8的解
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- 10-(-3a²+2a-1)-a³化简