题目

It's said that if you make a ________ while seeing a shooting star, it may come true some day.A.decision B.wish C.mistake D.difference 答案：【答案】B【解析】句意：据说如果你在看流星的时候许个愿，总有一天会实现的。考查名词辨析。make a decision做决定；make a wish 许愿；make a mistake 犯错误；make a difference有影响。根据后文come true实现可知，前面是指许愿，故选B。证明下列等式： ；