1. (8 points) Find the pattern, and fill in the ( ) with the number you think is appropriate: 2, 4, 3, 9, 4, 16, 5, ( ), ( ), 36, 7, ...
So the correct numbers are ( )
A. $18, 6$
B. $22, 6$
C. $25, 6$
D. 25
【Answer】Solution: Note that:
4 is the square of 2,
9 is the square of 3,
16 is the square of 4,
25 is the square of 5,
36 is the square of 6,

According to this pattern, the two blanks should be filled with 25 and 6, respectively. Therefore, the correct choice is: $C$.