单选题 If x is a positive number and 1/2 the square root of x is the cube root of x, then x=
A. 64
B. 32
C. 16
D. 4
E. 1

【正确答案】 A

【答案解析】The fastest approach to a question like this is probably to plug in the answer choices and see which one fits. If x=64, then 1/2 of the square root is 4, which is also the cube root of 64, so A is the answer.