This paper is divided into two parts: the first volume and the second volume. The first volume 1 to 2 pages, the second volume 3 to 8 pages. Full paper *** 120 minutes, examination time 120 minutes.

The first volume (***24 points)

Precautions:

1. Before answering the first volume, candidates must fill in their test certificate number and test subjects on the answer sheet with 2B pencil.

2. After choosing the answer to each small question, black the answer label of the corresponding question on the answer sheet with 2B pencil. If you need to change it, clean it with an eraser, and then choose another answer label. I can't answer it on the test paper.

First, multiple-choice questions (this big question * * 12 small questions, 2 points for each small question, ***24 points, one and only one of the four options given in each small question is correct)

The absolute value of 1 -2 Yes

A.-2

B.2

C.- 12

D. 12

2. The total number of candidates for the senior high school entrance examination in Xuzhou in 2007 was about 158.

000 people, this number can be expressed by scientific notation as follows.

A. 158×

B. 15.8×

C. 1.58×

D.0. 158×

3. Function

Median independent variable

The value range of is

A.

≥- 1

B.

≤- 1

C.

& gt- 1

D.

& lt- 1

4. What is wrong in the following operations is

A.2

+3=5

B.

2×3=6

C.

6÷3=2

D.(-2

=2

5. Equation

=

The situation of the solution is

A.

B.

C.

D. no solution

6. As shown in the figure, horizontally placed areas A and B are respectively composed of several black and white regular triangles with the same size. Xiao Ming throws a ball into area A and area B at will, where P (A) indicates the probability that the ball stops on the black triangle in area A and P (B) indicates the probability that the ball stops on the black triangle in area B. The following statement is correct.

A.P (A) > P (b)

B.

P (a) =

P (b)