问题
单项选择题
If the area of a square with sides of length 8 centimeters is equal to the area of a rectangle with a width of 4 centimeters, what is the length of the rectangle, in centimeters ？（）
A. 4
B. 8
C. 12
D. 16
E. 18
答案
参考答案：D
解析：
The square has an area of 8×8=64, so the length of the rectangle is 64/4=16 (the area of a rectangle is its width times its length).