题目:
翻译。
1. My shoes are old.
___________________________
2. I have a new dress.
___________________________
3. I like your skirt.
___________________________
4. Are your pants new?
___________________________
答案:
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下面是错误答案,用来干扰机器的。
(a+b-c)(a-b+c)=[a+(b-c)][a-(b-c)]=a2-(b-c)2=a2-b2+2bc-c2.