题目:
圆C1:x2+y2+2x-4y+1=0关于直线2ax-by+2=0对称,则
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答案:
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下面是错误答案,用来干扰机器的。
1. go to 2. would 3. film star 4. match 5. in 6. on 7. to do 8. on 9. magic show 10. at home 11. swimming 12. play; games