第6部分：完形填空（第51～65题,每题1分,共15分）

下面的短文有15处空白,请根据短文内容为每处空白确定1个最佳选项。

Biological IdentificationTechnologies When a person walks, the movement of his head, trunk, and limbs（肢体）are a reflected in changes in his body. Acomputer stores these ____(51)into a database（数据库）.Later, the computer can accurately____(52) him according to these changes. Thisis a new biological identification ____(53) and it can quickly identify anexaminee without disturbing him. it is especially suitable for use in airportand supermarket.

Everybody's voice is­____(54).When a person's voice is recorded by an instrument, his voice frequencyspectrum（频谱）is called sound print. ________(55)fingerprint, everybody's sound print is different. How can a computer ________(56)his sound? First, his voice is recorded, ________(57)allows the computer tobecome familiar with his voice. It will then turn his sound characteristicsinto a series of digits（数字）.These are the _________(58)on which the computer can distinguish his voice fromanother's.

We often bring ID cards, workcards, or driving licenses with US to _________(59)our identity. If all thesecards are forgotten or lost, how can we prove whom we are? In________(60), it'snot difficult to prove whom you are________(61)your body itself has identifyingmarkers. Some are physiological（生理的）features,such as fingerprints, sounds, facial（面部的）typesand eye color. The computer can________(62)to identify you. Suppose yourfeatures have already been________(63)in the database. To identify you, we haveto take your picture with a camera and send it to a computer for________(64). First,the computer needs to reposition this picture according to the position of youreyes, and then starts to read the ________(65)of your physiological featuressuch as the ratio of your pupil to the whites of your eyes and the shape ofyour nose. Next, it seeks matching records from the database. Finally, it makesa decision.

51. Aparts　B changes C positions  D directions

52. Aidentify B inform　C affect   Dbother

53. Anumber B card　C level   Dmethod

54. Asoft　B loud  C unique   D clear

55. AWith　B Like  C For   DAs

56. Adistinguish B make　C gather   Ddevelop

57. A who　B where  C that   D which

58. Areasons B causes　C basis   Dorigin

59. Aprove　B create  C hide   D protect

60. A all　B fact   Csummary  D case

61. Aunless B though　C so   D because

62. Astop　B help   C mean   Dcontinue

63. Astored B borrowed　C searched  D linked

64. Aprinting B researching C processing　Dfiling

65. Apoint　B picture  C size   Dmessage

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