题目

阅读下面短文，请根据所给中文正确拼写单词，使短文意思完整。每空限填一词。 Imagine a life without arms or legs! You can’t hold anything in your arms. You can’t walk anywhere with you feet. How would you last a day like that? Would you 1.        (微笑) at yourself in the mirror like Nick Vujicic, the 29-year-old Australian? Nick was born without limbs(四肢)，so life was not 2.       (容易) for him. At school many students played 3.        (笑话) on him because he looks different from everyone else. He was refused to be the小江玩投掷飞镖的游戏，他设计了一个如图所示的靶子，点E，F分别是矩形ABCD的两边AD，BC上的点，且EF∥AB，点M，N是EF上任意两点，则投掷一次，飞镖落在阴影部分的概率是 ．