如果眼球的前后径过长，则患者[ ]
A．为近视眼，要配戴凹透镜
B．为远视眼，要配戴凸透镜
C．为近视眼，要配戴凸透镜
D．为远视眼，要配戴凹透镜
答案：A
--- People should stop using their cars and start using public transport．
--- _______．The roads are too crowded as it is．
A．All right
B．Exactly
C．Go ahead
D．Fine
已知关于x的方程x2-2 （ m-1 ） x+m2=0．若方程的两根互为倒数，则m=______，若方程两根之和与刚才两根积互为相反数，则m=______．
