题目5.单选题 函数极限lim_(xto1)(2x^2-x+1)/(3x^2)-2x+1=()。A. 0B. 1C. 2D. 35.单选题 函数极限$\lim_{x\to1}\frac{2x^{2}-x+1}{3x^{2}-2x+1}=$()。A. 0B. 1C. 2D. 3题目解答答案B. 1