函数f(x)=x5+x-3的零点落在的区间是[ ]
A．[0，1]
B．[1，2]
C．[2，3]
D．[3，4]
答案：B
太阳光与水平面成40°，若要使太阳光反射到竖直的井底，则平面镜与竖直方向之间的夹角应该是（ ）
A．40°
B．45°
C．65°
D．25°
She was such a proud person that she would die ____ she would admit she was wrong.
A．rather than
B．until
C．after
D．before
