预约成功
Biological Identification Technologies
When a person walks，the movement of his head，trunk，and limbs(肢体)are all reflected in changes in his body.A computer stores these (51)into a database(数据库).Later，the computer can accurately (52)him according to these changes.This is a new biological identification (53)and it can quickly identify an examinee without disturbing him.
Everybody's voice is (54).When a person's voice is recorded by an instrument，his voice frequency spectrum(频谱)is called sound print. (55) a fingerprint.everybody's sound print is different.How can a computer (56) his sound? First, his voice is recorded, (57) allows the computer to become familiar with his voice.It will then turn his sound characteristics into a series of digits(数字).These are the (58)on which the computer can distinguish his voice from another's.
We often bring ID cards，work cards, or driving licenses with us to (59)our identity.If all these cards are forgotten or lost.How can we prove whom we are? In (60)，it's not difficult to prove whom you are, (61)your body itself has identifying markers.Some are physiological(生理的)features, such as fingerprints，sounds，facial (面部的)types and eye color. The computer can (62)to identify you.Suppose your features have already been (63)in the database.To identify you, we have to 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 your eyes, and then starts to read the (65)of your physiological features such as the ratio of your pupil to the whites of your eyes and the shape of your nose.Next, it seeks matching records from the database.Finally，it makes a decision.
51 A parts B changes C positions D directions
52 A identify B inform C affect D bother
53 A number B card C level D method
54 A soft B loud C unique D clear
55 A With B Like C For D As
56 A distinguish B make C gather D develop
57 A who B where C that D which
58 A reasons B causes C basis D origin
59 A prove B create C hide D protect
60 A all B fact C summary D case
61 A unless B though C so D because
62 A stop B help C mean D continue
63 A stored B borrowed C searched D linked
64 A printing B researching C processing D filing
65 A point B picture C size D message
答案：51. B 52. A 53. D 54. C 55. B
56. A 57. D 58. C 59. A 60. B
61. D 62. B 63. A 64. C 65. D
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