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The first chapter of seventh grade mathematics reviews the examination questions
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First, multiple-choice questions. (2 points for each small question ***24 points)

1, the temperature has risen for a day, and c means (c)

A, C.B. has gone up, but it hasn't changed. C.c.d. is down.

2, the following statement is correct (b)

A, positive and negative numbers are collectively called rational numbers. B and 0 are integers, but not positive numbers.

C, 0 is the smallest rational number. D. Integers include positive integers and negative integers.

3. Starting from the origin of the number axis, a point moves 3 unit lengths to the right and then 7 unit lengths to the left. At this point, the number corresponding to this point is (d).

a、3 B、 1°C 、-2 D 、-4

4. On the number axis, the point representing an integer greater than -2 and less than 2 is (A)

One, three B's, four C's, five D's and countless 1.

5. If the reciprocal of a number is less than itself, then this number is (C).

A, positive b, non-positive c, negative d, non-negative.

6. If a represents the smallest positive integer and b represents the largest negative integer, the value of -b+a is (a).

A, 0 B, 1 C, 2 D, uncertain

7. If the sum of two numbers is negative, then these two numbers (D)

A, all positive numbers b, all negative numbers c, at least one positive number d and at least one negative number

8. If, then A is (? )

A, non-negative b, non-positive c, negative d, positive.

9. If A and B are antonyms, the following formula may not hold (? )

A, B, C, D,

10, the data described below is not accurate data (c)

There are more than 3000 teachers and students in our school. B. Elevation of Turpan Basin155m.

C, 5 o'clock? Hundreds of thousands of people's liberation army armed police soldiers took part in the earthquake relief in Wenchuan earthquake.

D Xiaohong measured the length of the math book as 2 1. 1 cm.

1 1, and the calculated value is (? )

A, B, C, D,

12. Observe the following formula:,,, … According to the law in the above formula, the last digit of the guess should be (? )

a、2 B、4 C、6 D、8