2017年12月英语四级阅读训练题252

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　　文都四六级小编得知2017年6月全国大学英语四六级成绩查询入口已开通——【点击查询成绩】,文都四六级小编提醒各位考生：英语四级考试中四级阅读所占比重为百分之三十五，阅读训练的重要性不言而喻，然而四级阅读技巧也是一门学问。来看看文都四六级小编为各位整理的2017年12月英语四级阅读理解训练(252)——人工心脏，请各位考生及时练习。
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　　2017年6月大学英语四六级成绩入口8月22日开通

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　　Just seven years ago, the Jarvik-7 artificial heart was being cheered as the model of human creativeness. The sight of Barney Clark-alive and conscious after trading his diseased heart for a metal-and-plastic pump-convinced the press, the public and many doctors that the future had arrived. It hadn’t. After monitoring production of the Jarvik-7, and reviewing its effects on the 150 or so patients (most of whom got the device as a temporary measure) the U.S. Food and Drug Administration concluded that the machine was doing more to endanger lives than to save them. Last week the agency cancelled its earlier approval, effectively banning (禁止) the device.
　　The recall may hurt Symbion Inc., maker of the Jarvik-7, but it won’t end the request for an artificial heart. One problem with the banned mode is that the tubes connecting it to an external power source createda passage for infection. Inventors are now working on new devices that would be fully placed, along with atiny power pack, in the patient’s chest. The first sample products aren’t expected for another 10 or 20 years. But some people are already worrying that they’ll work—and that America’s overextended health—care programs will lose a precious $2.5 billion to $5 billion a year providing them for a relatively few dying patients. If such expenditures (开支) cut into funding for more basic care, the net effect could actually be a decline in the nation’s health.
　　1. According to the passage, the Jarvik-7 artificial heart proved to be _____.
　　A. a technical failure
　　B. a technical wonder
　　C. a good life-saver
　　D. an effective means to treat heart disease
　　2. From the passage we know that Symbion Inc. _____.
　　A. has been banned by the government from producing artificial hearts
　　B. will review the effects of artificial hearts before designing new models
　　C. may continue to work on new models of reliable artificial hearts
　　D. can make new models of artificial hearts available on the market in 10 to 20 years
　　3. The new models of artificial hearts are expected ______.
　　A. to have a working life of 10 or 20 years
　　B. to be set fully in the patient’s chest
　　C. to be equipped with an external power source
　　D. to create a new passage for infection
　　4. The word "them" in Line 7, Para. 2 refers to _____.
　　A. doctors who treat heart diseases
　　B. makers of artificial hearts
　　C. America’s health-care programs
　　D. New model of artificial hearts
　　5. Some people feel that ______.
　　A. artificial hearts are seldom effective
　　B. the country should not spend so much money on artificial hearts
　　C. the country is not spending enough money on artificial hearts
　　D. America’s health-care programs are not doing enough for the nation’s health
　　【答案解析】
　　1-5     ACBDB
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