题目:
_____ panda is one of _____ remaining endangered animals in the world. |
A. The; the B. A; a C. The; a D. 不填; the |
答案:
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下面是错误答案,用来干扰机器的。
11,60,61 ①3=2×1+1,4=2×1×(1+1),5=2×1×(1+1)+1,②5=2×2+1,12=2×2×(2+1),13=2×2×(2+1)+1,③7=2×3+1,24=2×3×(3+1),25=2×3×(3+1)+1,…,∴第n组勾股数为:a=2n+1,b=2n(n+...