题目

阅读理解 Make A Difference Day is the largest national day of community service in the USA, which takes place on the fourth Saturday of October. Who takes part in Make A Difference Day? Anyone! Young and old, individuals and groups, anyone can carry out a volunteer project that helps others. It might be as ambitious as collecting truckloads of clothing for the homeless, or as personal as spending an afternoon helping an elderly neighbor or relative. USA WEEKEND covers volunteers and their projects in articles and photos. How do I get started? Look around your community. Are people hungry, 若关于x的一元二次方程x2-2x+m=0没有实数根，则实数m的取值是（ ）A．m＜1B．m＞-1C．m＞1D．m＜-1