题目

Liu Wei is very famous in China because he can play the piano with his toes(脚趾).One day when Liu Wei was only 10 years old, he played a game with some friends. He lost both his arms because of electricity.Liu Wei was very sad when both his arms were cut off after the accident. But soon he had to make a choice.“For people like me, there were only two choices. One was to give up all the dreams, which would cause a quick death. The other was to work hard without arms to live an excellent life.”says Liu Wei.Liu Wei’s dream was to be a pianist. He learned to play the piano with his toes. 下列命题中，假命题是（ ）A.对顶角相等B.三角形两边的和小于第三边C.菱形的四条边都相等D.多边形的外角和等于360°