A) a technical failure
B) a technical wonder
C) a good life-saver
D) an effective means to treat heart disease
本题是考核学生根据止下文全面理解和进行正确判断的能力,问的是本文论述的Jarvik-7人造心脏性能和效果到底如何。文章一开头说Jarvik-7是一大技术成就,但文章说到:the .U.S. Food and Drug Administration concluded that the machine was doing more to endanger lives than to save them .后面又提到:Last week the agency canceled its earlier approval , effectively banning the device.这两句话提供了这个问题的答案。因此,答案:
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 patients chest
C) to be equipped with an external power source
D) to create a new passage for infection
本题是考核正确理解事实细节的能力。选项已的意思与文章中第二段第三句,即Inventors are now workingin the patients chest.的意思符合,因此选项B)是答案。
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