56.What is implied in the first sentence?

　　A. Americans are better prepared for death than other people.

　　B. Americans enjoy a higher life quality than ever before.

　　C. Americans are over-confident of their medical technology.

　　D. Americans take a vain pride in their long life expectancy.

　　57.The author uses the example of caner patients to show that

　　A. medical resources are often wasted.

　　B. doctors are helpless against fatal diseases.

　　C. some treatments are too aggressive.

　　D. medical costs are becoming unaffordable.

　　58.The author's attitude to ward Richard Lamm's remark is one of

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