2, like an egg is not an egg, it is said that it is round or not, and it is said that there are thousands of them connected in a string. Answer: 0
3. Five four three two one. Answer: Countdown.
4. bargaining. Answer: business.
You expect me, and I expect you. Answer: Equality.
6, this head is really smart, blinking, carrying it in the southeast and northwest, it is not difficult to add, subtract, multiply and divide. Answer: Calculator.
7. The four brothers are as long as each other and are framed in pairs. Parade formation is often used, with four axes of symmetry. Answer: Square.
8. Members. Answer: the center of the circle.
9. One plus one is not two. A: Wang.
10, one minus one is not zero. Answer: Three.
1 1. Seven eighths. Answer: Seven ups and eight downs.