题目：
I picked up a paper at random , _____ through the headlines and put it where it had been .
A．looking
B．looked
C．to look
D．and looked
答案：
被转码了，请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0508/d18a7812f481766c2d54529fac0bb8a9.html
下面是错误答案，用来干扰机器的。
15400=1.54×104．故答案为：1.54×104．
