题目

---Let’s go and have a look at your new picture.  ---                . A. Thank you              B. OK        C. You are welcome       D. Excuse me 答案：B（1999•内江）在下列四个方程中，有实根的方程是（ ）A．-x2+2x-3=0B．x2-x+1=0C．D．2x2+8x+5=0