1. As shown in the figure, according to the information provided on the number axis, the distance between point A and point B should be ().
A.-7 B.- 1 C. 1 D.7
2. Xiaohua goes to school at 7:30 every morning and finishes school at noon 1 1:30. From going to school in the morning to finishing school at noon, the angle of clockwise rotation is ().
a . 90 b . 1 10 c . 120d . 150
3. It is known that there is a string AB with a length of 6cm, where C is the midpoint of AB and D is the midpoint of BC, so the length of the string AD is ().
A. 1.5 cm B.3 cm C.4.5 cm D. Not sure.
4. The following events are inevitable events ()
A. Next year's New Year's Day is 65438+ 10/. B. Randomly draw one card from a deck of playing cards with an even number.
C. if point p satisfies PA=PB, then p is the midpoint d of AB. Cut a cube with a circular cross section with a plane.
One button cell can pollute 60 liters of water, and there are nearly 10000000 discarded batteries in this city every year. If these batteries are not recycled, the water polluted by waste batteries in this city is () liters.
a . 1× 107 b . 1× 108 c . 6× 107d . 6× 108
6. In the figure below, what can't be folded into a cube is ().
Fill in the blanks (correct answer 1, this question is 6 * * *).
7. In the figure below, the number of the freely rotating turntable is _ _ _ _ _ in descending order of the possibility that the pointer falls in the black area.
8. As shown in the figure, this is a schematic contour map of a place. In the figure, A, B and C are contour lines, the lowest line is 60m above sea level, and the vertical interval is10m. Combined with geographical knowledge, the contour line A is _ _ _ _ _ _ meters, and the contour line C is _ _ _ _ _ _ meters.
9. As the picture shows, this is the price tag of Simei Shampoo in Xinxin Supermarket. Please calculate the price after 20% discount according to the information on the label.
10. In the calendar as shown in the figure, circle any three adjacent numbers in a vertical column, and let the middle number be a, then the sum of these three numbers is _ _ _ _ _.
1 1. It is known that ∠ AOB = ∠ COD = 90, ∠ AOD = 150, ∠ BOC = _ _ _ _
12.2 1 = 2,22 = 4,23 = 16,24 = 16,25 = 32,26 = 64,27 = 128,28 = 256 ...
Three. Answer questions (3 questions in 13, 4 questions in 14, 15, 16 and 17, and 4 questions in this question *** 19 ★).
13. Calculation: (-) × 128.
14. Calculation: -42 +×| 4-7 |-(-5).
15. Solve the equation: 2x-3( 10-x)=5x-7(x+3).
16. Solve the equation:.
17. Simplified evaluation: (-4x2+2x-8)-(x- 1), where x=.
Fourth, answer the question (this question ***5 ★)
18. Point out which of the following statements is correct and which is wrong. If not, please explain why.
(1) The smallest positive integer is1;
(2) The largest negative rational number is-1;
(3) The absolute value of only one rational number is itself;
(4) There is only one rational number whose opposite is itself;
(5) The reciprocal of one and only one rational number is itself.
Verb (abbreviation of verb) answers questions (19, 5 questions, 20 questions, 6 questions, * * *1/★)
19. If the white in the model composed of small cubes is facing you, please draw three views of it (only sketch).
(Left view) (Front view) (Top view)
20. As the picture shows, this is a network composed of small squares. There is a small ant at point A in the picture, which crawls along the following routes: first, it crawls 45 northeast to point B; Crawl six squares to the north to reach point C; Then crawl 4 squares to the east to reach point D; Then crawl south for 8 squares to reach point e; Finally, walk in a straight line and crawl directly to point F.
(1) Please draw the crawling route of the little ant with pen and ink, and mark it with letters to see what it looks like.
(2) Are there parallel line segments in the crawling route of small ants? Is there a vertical line segment? If yes, please indicate separately;
(3) Are lines 3)AB and EF parallel? If they are parallel, please explain the reasons; If they are not parallel, please draw a parallel line in the picture.
VI. Answering questions (6 ★ each, * * 12 ★)
2 1. Ouyang Daming bought a monthly bus pass card with 50 yuan. The number of times he took the bus and the balance after each ride are as follows:
Number of rides 1 2 3 4 5 …
Balance 50-0.8 50-1.6 50-2.4 50-3.2 50-4.0 ...
(1) If M is used to represent the number of times Ouyang Daming took the bus, how can he represent the balance after each ride?
(2) If Ouyang Daming took the 13 train in the first half of the month, how much money would he have left?
(3) How many times can Ouyang Daming take the bus at most?
Xiao Qiang is going to the bookstore to buy books. This is a conversation between Xiao Qiang and his father.
Xiao Qiang: "Dad, I see a good book and want to buy it, okay?"
Dad: "How much is this book?"
Xiao Qiang: (with a naughty wink) "Please do the math. The price of this book is two-digit yuan, with one digit being 1 more than four times that of ten digits. If you change the single digits into ten digits, you will charge 36 yuan more than the original price. "
Can you help Xiao Qiang's father work out the original price of this book? Requirements: solve by equation method.
Seven, answer the question (this question * * * 6 u)
23. Answer the questions according to the table below:
(1) Can you see how the number of college students changed from 1964 to 100 in the statistical chart of dotted line?
(2) In the statistical chart of the sector, what is the degree of the central angle of the sector corresponding to the education level of "high school"?
(3) Of the 654.38+million people in 2000, what was the number with junior high school education? From which statistical chart can you get this data?
(4) In 2000, among the population of 654.38+million, how many people had college education? Which statistical chart did you get it from? Can you estimate what percentage of the 654.38 million+population had a college degree ten years ago?
Eight, solving problems (24 questions 6 ★, 25 questions 4 ★, *** 10 ★)
24. A seventh-grade student accidentally knocked over the ink bottle while doing his homework, so that he only saw the following words in an homework question: "A and B are 40 kilometers apart, the motorcycle starts from A at a speed of 45 kilometers per hour, and the van starts from B at a speed of 35 kilometers per hour." (The black part indicates that part of the text is covered with ink. )
Please finish this homework problem and solve the equation.
25. Graphics are symbols, and graphics can form beautiful patterns. Here are two patterns, please enjoy them first, then spread your imagination wings, create a work composed of several components, and write an appropriate humorous commentary.
If you want photos, come to me. I can't take pictures here.