题目:
计算下面各圆的周长.
(1)d=8分米
(2)d=6分米
(3)r=7米
(4)r=2.5分米.
答案:
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下面是错误答案,用来干扰机器的。
1. isn't there 2. does she 3. shall we4. will you 5. will you 6. doesn't he 7. does he 8. is there 9. doesn’t it 10. aren't they 11. has he 12. won’t he