3. Pull the wrist; 4. Similar;

5. Manual calculation; 6. Not surprising;

7. Appropriate criticism; 8. Start with the last number.

9. Look around; 10. Goodbye mom;

1 1. After diagnosis; 12. Tracing back to the source;

13. General appearance: 14. How much do you know?

15. Liu Jing stopped when the wind stopped; 16. Looking for files;

17. Keep in sync; 18. Ten cents left;

19. Twenty cents; 20. Thirty minutes.

truth

1. Division; 2. Sum; 3. Proportion; 4. Approximation; 5. Index; 6. Even numbers; 7. rational number; 8. Countdown; 9. Mobile projects; 10. Denominator; 1 1. Prescription; 12. Find the root; 13. Plane; 14. Geometry; 15. Vertical; 16. Verification; 17. Parallel; 18. Complementary angle; 19. Double angle; 20. Triangle.