three blondes were all 1 for the last available position on the local police force. the detective conducting the interview looked at the three of them and said, "so you all want to be a cop, eh?"
the blondes all nodded. the detective got up, opened a file drawer and pulled out a file 2. sitting back down, he opened it up and withdrew a photograph, and said, "to be a detect, you have to be able to detect. you must be able to notice things such as distinguishing features and oddities such as scars, etc." so saying, he stuck the photo in the face of the first blonde and withdrew it after about 2 seconds. "now, he said, "did you notice any distinguishing features about this man?"
the blonde immediately said, "yes, i did. he only has one eye!"
the detective shook his head and said, "of course he only has one eye in this picture! it's a profile of his face! you're dismissed!"
the first blonde hung her head and walked out of the office. the detective then turned to the second blonde, stuck the photo in her face for two seconds, pulled it back and said, "what about you? notice anything unusual or outstanding about this man?"
the blonde immediately shot back, "yep! he only has one ear!"
the detective put his head in his hand and exclaimed, "didn't you hear what i just said to the other lady? this is a profile of the man's face! of course you can only see one ear!! you're excused, too! you'd never make a good detective!"
the second blonde sheepishly walked out of the office.
the detective turn his attention to the last blonde and said, "this is probably a waste of time, but....". he flashed the photo in her face for a couple of seconds and withdrew it, saying, "alright. did you notice anything distinguishing or unusual about this man?"
the blonde said, "yes, i did. this man wears contact lenses."
the detective frowned, took another look at the picture and began looking at some of the papers in the folder. he looked up at the blonde with a puzzled expression and said, "you're absolutely right! his bio says he wears contacts! how in the world could tell that by looking at this picture?"
the blonde rolled her eyes and said, "duh! he has only one eye and one ear, he certainly can't wear glasses!"
收听单词发音 
