（）refers to the actual realization of the ideal language users knowledge of the rules of his language in utterances.

听力原文：W: Would you like to have a break?M: Oh, I'd love to. Why not have a cup of coffee?What idea has the man got?

A.Spare
B.
B．Get
C.
C．Have
D.

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翻译：In the year of 1993，American President，Bill Clinton，proposed that every American citizen should be made to carry ’health security cards’，which he described as ’smart cards’coded with his or her personal medical information.Congress rejected that proposal，and yet the administration persisted.It lobbied successfully for more moderate health care legislation in 1996and ever since then has been developing a plan to assign every American a ’unique health identifier（UHI）’：a computer code assigned to each person that would enable the government to organize all medical records into a central database.Administration officials reason that if the federal government could establish a ’national health care data network’，this would make billing more efficient and allow medical researchers to study large samples of health records.Such a computerized library of medical files could work only if each American were assigned a UHI code. 点击查看答案