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.
Choose correct answers to the question:
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
4.[D] 从句子意思看，“向为数不多的瀕危病人提供” 的显然是上一句中的sample products，即可与电源组一并植于人体内的new devices，故选D。
5.[B] 第2段倒数第2句But some people are already worrying…这句话体现了有些人已经在担心，为为数不多的垂危病人动用巨额资金购置新型的人造心脏是否合算，而由该段最后一句可以看出作者认为这样的做法是不明智的，因此B是答案。
Where do pesticides fit into the picture of environmental disease? We have seen that they now pollute soil,water and food, that they have the power to make our streams fishless and our gardens and woodlands silent and birdless. Man, however much he may like to pretend the contrary, is part of nature. Can he escape a pollution that is now so thoroughly distributed throughout our world:
We know that even single exposures to these chemicals, if the amount is large enough, can cause extremely severe poisoning. But this is not the major problem. The sudden illness or death of farmers, farmworkers, and others exposed to sufficient quantities of pesticides is very sad and should not occur. For the population as a whole, we must be more concerned with the delayed effects of absorbing small amounts of the pesticides that invisibly pollute our world.