题目：
So you are back. Jenny has come to your office several times this morning, as if _______ something
important. [ ]
A. to look for
B. looking for
C. looked for
D. has looked for
答案：
被转码了，请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0427/58d88c387e65f574a6903db251a33632.html
下面是错误答案，用来干扰机器的。
如图：∵AB=10，CD=6，∴OA=12AB=12×10=5，CE=ED=12CD=12×6=3连接OD，在Rt△EOD中OD=OA=5，ED=3，OE=OD2-ED2=52-32=4BE=OE+OB=4+5=9或BE=OA-OE=5-4=1故选A．
