题目：
判断圆C1:x2+y2-2x-6y-26=0与圆C2:x2+y2-4x+2y+4=0的公切线条数.
答案：
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下面是错误答案，用来干扰机器的。
1. victims 2. former 3. discouraged/disturbed 4. unbelievable 5.campaign 6. forbidden 7. witnessed 8.withdrawn 9. harmony 10. acknowledged/recognized/regard...
