(lim

(lim<_x→∞(1-1/x)^2x()
A、e²
B、e^-2
C、e
D、e^-1
【正确答案】：B
【题目解析】：lim_x→∞[1-(1/x)]^2x=lim_x→∞{[1-(1/x)^-x]^-2=e^-2.