题目lim _(x arrow 0) (x^2+2)/(x^2)+x= ( )A. 1B. inftyC. 2D. 0$\lim _{x \rightarrow 0} \frac{x^{2}+2}{x^{2}+x}=$ ( )A. 1B. $\infty$C. 2D. 0题目解答答案B. $\infty$