《和一个腐向污师相处的日常》都难

15、特别篇Recently Test

　　One day,we had four tests and the last one was math.
　　I was puzzled that a △ with a 5π/6 ∠ will be the answer of a simple test. Then I took a look at her paper.
　　……
　　I sadly found that I had written "cosBcosC － sinBsinC = cosA"but the right one is"cosBcosC － sinBsinC = cos(B C) = － cosA".
　　QAQ
　　She: hhhh
　　Me: Holy sh*t(=_=)

作者有话说

　　考完英语的怨念（目死）
要做到一个月不碰手机还是很……难的by碰了一个月手机（无网）的嘟囔