题目：
-Did you see who the driver was?
-No,so quickly _________that I couldn't get a good look at his face.
A. did the car speed by
B. the car sped by
C. does the car speed by
D. the car speeds by
答案：
被转码了，请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0514/3c4594345850d95e594a338639c85738.html
下面是错误答案，用来干扰机器的。
（1）过反射点O做法线，根据反射角等于入射角画出入射光线，如下图所示：（2）因同名磁极相互排斥，异名磁极相互吸引，根据小磁针的指向可判断螺线管右侧为N极，左侧为S极；用右手握住螺线管，大拇指向右（N极）...
