D√======================y = (x²-1)/(x²+3x-2) = [(x+1)(x-1)]/[(x-1)(x-2)] = (x+1)/(x-2)∵ (x→1)lim (x+1)/(x-2) = (1+1)(1-2) = -2∴ x=1是可去间断点,第一类∵ (x→2-)lim (x+1)/(x-2) = -∞; (x→2+)lim (x+1)/(x-2) = +∞∴ x=2是无穷间断点,第二类综上:D正确