I have detailed documents here. I'd better send them to e-mail. Some pictures can't be posted.

Eight Grade (Next) Final Simulation Test Paper (East China Normal University Edition)

Name of class seat number of county (city, district) school

1. Fill in the form carefully: (2 points for each small question, * * * 28 points)

The arithmetic square root of 1 and 25 =.

2. In order to make the algebraic expression meaningful, the value range of X is _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

3. Given the value range of:,.

4. Compare size:

5、 = 。

6. Simplification =

7. Given a sample of 1, 3, 2, 5, 4, the range of this sample is.

8. If the points m (-4,3) and n (4 4,3) are known, then m and n are symmetrical.

9. It is known that the circumference of a rectangle is12cm. If the length of one side is y cm and the length of the other side is x cm, the functional relationship between y and x is, and the range of independent variables is.

10, if it is known that the image passes through P (- 1 2), then K=.

1 1. As shown in the figure, the short arm length of the railway railing is 1m, and the long arm length is 16m. The end of the short arm drops by 0.5m, and the end of the long arm rises by _ _ _ _ _.

12 As shown in the figure, Xiao Ming walked 5 meters under the street lamp and found that his shadow length DE on the ground was 2 meters. If Xiaoming's height is 1.6 meters, then the height AB of the street lamp from the ground is _ _ _ _ _ _ _ meters.

13, medium, and then =

14. Student A's five math test scores (full mark 120) are as follows:

Answer: 97103951095 After calculation, his average score is = 100, so the variance is,

Second, choose carefully: (4 points for each small question, 24 points for * * *)

15. If ship A is in the northeast of lighthouse B, lighthouse B is in the direction of A ().

(a) north by west (b) north by west (c) south by west (d) south by west.

16, the image of a linear function does not pass through the first quadrant, then the symbol is ().

(A) >0，> 0(B)