(A)3 (B)4 or -2 (C)3 or -3 (D)-3

2. Known function ()

(a) The maximum value is 3 (B) The maximum value is 9 (C) The maximum value is 2 (D) The minimum value is 2.

3. It is known that lg2=a, then log225 is equal to ().

(A) 1-aa(B)A 1-A(C)2( 1-A)A(D)2a 1-A

4. The equation of the known circle is x2+y2+2x-8y+8=0, and the tangent equation is ().

(A)7x+24y- 14=0 or y=2 (B)7x+24y- 14=0 or x=2.

(C)7x+24y+ 14=0 or x=2 (D)7x-24y- 14=0 or x=2.

5. It is known that {} is an example of equal ratio, and its common ratio is an integer, so the value of ().

256(B)-256(C)5 12(D)-5 12

6. The focal coordinate of parabola is ()

(A) (B) (C) (D)

7, A: x2+y2=0, B: x=0 and y=0, then ()

(a) A is a sufficient condition for B, but not a necessary condition for B..

(b) A is a necessary condition for B, but not a sufficient condition for B..

(c) A is a necessary and sufficient condition for B ..

(d) A is neither a sufficient condition nor a necessary condition for B.

8, the value of is ()

(A) (B) (C) (D)

9. There are three black balls and four white balls in the bag. The probability of taking out two balls of the same color at a time is ().

(A) (B) (C) (D)

10, the side length of the cube is, then the diagonal length of the cube is ()

(A) (B) (C) (D)

1 1, the following four relationships: ① ≦ {0}; ②0∈{0}; ③ {0}; ④0, the correct number here.

Yes ()

(A)4 (B)3 (C)2 (D) 1

12, in the function given below, increasing function is ().

(A) =sin，∈(0，)(B) =-cos，∈(0，)

(C) =tan，∑(0，)(D) =cos，∑(-，)

13. if a, b and c are all greater than zero, and a, b and c become arithmetic progression and geometric progression, then ().

a+c=2b (B)ac=b (C)a=b=c (D)a+b=4c

14, set the order size to ()

(A) (B)

(C) (D)

15. given A = (3, -2) and B = (-5, 4), then a? b=()

Article 23(B)23(C)22(D)22

16, the function f(x)=x2+2(m- 1)x+2 is the subtraction function (-∞, 4) in the interval, so the value range of the real number m is ().

(A)m≥-3 (B)m=-3

(C)m≤-3 (D)m≥3

17, from the students of 13, two students were selected as the team leader and deputy team leader, and the different election results were * * * ().

(A)26 species (b), 78 species (C) 156 species (D) 169 species.

18, let there be a point A () in the circle with O as the center. Draw a straight line through line A perpendicular to OA, and intersect the circle at two points M and N ... and then |MN|= ()

4 (B)8 (C)3 (D)6

19, let complete set = {x n * | x ≤ 7}, set m = {1, 3,5}, n = {2 2,3,4}, then m () is equal to ().

(A){ 1，5} (B){ 1，3，5，6，7}

{0， 1，3，5，6，7} (D){6，7}

20，" cos =" is "= "()

(a) Sufficient and unnecessary conditions (b) Necessary and insufficient conditions.

(c) Necessary condition (d) is neither sufficient nor necessary.

2 1, the function y=f(x) is known to be odd function, so its image ().

(a) Symmetry about the origin; (b) axis symmetry about x.

(c) symmetric about y axis (d) symmetric about straight line y = x.

22, the following four groups of functions f(x), g(x), said the same function is ().

(A)f(x)=，g(x)= 1 (B) f(x)=，g(x)=x

f(x)=，g(x)= (D) f(x)=，g(x)=x- 1

23. The focal coordinate of parabola y= is ().

(A)(，0) (B)(0，)

(C)(0)(D)(0)

24, known function f(x)= +3cosx, then it ().

(a) is an odd function; (b) is an even function.

(c) odd and even functions (d) odd and even functions.

25, function y = sin (). The minimum positive period of x r is ().

(A) (B)

(c) Article 2, paragraph 4

26. In order to get the image of the function y=sin2x+ cos2x, x, just put all the points () on the image of the function y = sin2x-cos2x.xr

(a) move one unit length in parallel to the left; (b) Move one unit length in parallel to the right.

(c) move one unit length in parallel to the left; (d) move one unit length in parallel to the right.

27. If = (-3,2), = (6,x), and ‖, then the value of x is ().

(A)4(B)4

Items (c) to (d)

28. The following types are known: ① ② ③.

(4). The correct one is ()

(A) ① and ③ (B)① and ②

(C)② and ③ (D)② and ④

29, in space, the following proposition is correct ()

(a) Two lines perpendicular to the same line are parallel.

(b) Two planes perpendicular to the same straight line are parallel.

(c) Two planes perpendicular to the same plane are parallel.

(d) Two straight lines parallel to the same plane are parallel.

30. It is known that A = (1, -2), B = (5 5,8), C = (2 2,3), and A (b.c) = ().

(A)( 10，-48) (B)-38 (C)(34，-68) (D)(-68，34)

Second, fill in the blanks:

1, a basketball player's hit rate on the free-throw line is 0.8, so the probability that he throws three free throws and at least two balls is _ _ _ _ _ _ _ _ (the result is answered by numbers).

2. The domain of function y= is

3. The domain of the function y=log2(6-5x-x2) is

4. What is the coefficient of X in the expansion? _______________.

5. In ABC, if a =, b = and c = 2, then b = _ _ _ _ _ _ _ _ _

6. The range of function y=sinx-3 cosx is

7. The elliptic equation with short axis length b=5, half focal length c=4 and focus on the Y axis is

8. Cut four identical small squares from the four corners of a rectangular cardboard with a side length of 10cm× 16cm to make an uncovered one.

Box, then the maximum volume of the box is _ _ _ _ _

9、

10, given vector, vector and vector * * * line, then

Third, answer questions.

1, the known function f(x)=, where a≤0.

(i) Find the domain of f(x);

(ii) Find all the values of x that make f (x) > 0.

2. As we all know, in arithmetic progression,

(i) Find out the tolerance of the sequence;

(II) If the sum of the first items in the series is 77, then.

3. Evaluate sin80-3 cos80-2sin20.

4. Find the parabola equation with the right focus of the ellipse as the focus and the hyperbola left directrix as the directrix, and find the midpoint coordinates of the chord of the parabola with the back inclination of the parabola focus of 45.

5.sin =- known. Try to find the value of Tan.

6, knowing the crime =-.

Try asking.

7. There are four numbers, of which the first three numbers are arithmetic progression, the last three numbers are geometric progression, the sum of the first and fourth numbers is 22, and the sum of the second and third numbers is 20. Find these four numbers.

8. It is known that there are arithmetic progression, tolerance, among which geometric progression, and. Find the general formula of sequence {0}.

9. In ABC, it is known that the degrees of its three internal angles A, B and C are arithmetic progression, and the opposite sides of the three angles A, B and C are.

Geometric series, verify that ABC is a regular triangle