题目内容：
Biological Identification TechnologiesWhen a person walks．the movement of his head，trunk，hipbones and limbs are all reflected in changes in his body．A computer （1）these changes into a database．Later，the computers can （2）identifv him according to these changes．This is a new hiological identification method and it can quiekly identify an examinee （3）disturbing him．It’s especially suitable for use in airports and supermarkets．
Everybody’s voice is （4）．When a person’s voice is recorded by an instrument，its voice frequencY spectrum is called his sound print．Like a fingerprint，everybody’s sound print is different．How can computers （5）his sound? First，his voice is recorded，which allows the computers to become familiar with his voice．It will then turn his sound characteristics into a （6）of digits．These digits represe
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