Topic content:
The following statement is correct ()
A. Rational numbers are either positive or negative
B. Non negative rational numbers are positive integers
C. 0.010010001... is a rational number
D. 0 is an integer
Best answer:
A、 Rational number also includes non positive and non negative integer 0, so this option is wrong;
B、 Non negative rational number also includes 0, so this option is wrong;
C. 0.010010001... is an infinite non cyclic decimal and irrational number, so this option is wrong;
D. 0 is an integer, so this option is correct
Therefore, D
Answer analysis:
There is no explanation for this question
Test core:
Definition of rational number: rational number is the general name of integer and fraction. All rational numbers can be transformed into fractions.