| A complex operation called spinal
fusion has emerged as the treatment of choice for many kinds of back pain. But a
number of researchers say there is little scientific evidence to show that for
most patients, spinal fusion works any better than a simpler operation, the
lamineetomy (椎板切除术). Some people would be better off with no surgery at all.
Even doctors who favor fusions say that more research is needed on their
benefits. In the absence of better data, critics point to a different reason for the fusion operation’s fast rise: money. Medicare can pay a surgeon as much as four times more for a spinal fusion as for a laminectomy. Hospitals also collect two to four times as much. "We all cave in to market and economic forces," said Dr. Edward C. Benzel. Though doctors, as a rule, should favor the least complicated treatment—wi A. Spinal fusion provides a better cure than other treatments. B. Spinal fusion is no good to patients suffering from back pains. C. There is limited evidence as to which treatment is better. D. Doctors have great confidence in the benefits of spinal fusion. [单项选择]The music called "blues" has deep roots in African-American history. In the Mississippi Delta, men working in the cotton fields and on construction crews chanted and sang as they worked. These work songs and "field hollers" expressed the pain and sorrow of the workers and helped to pass the time. During the evenings, the workers sang these songs, accompanied by guitar and banjo. Live dance bands started playing blues songs, and female singers further developed the style. The blues spread from its birthplace in the Mississippi Delta to other rural areas of the South. Eventually, the music traveled northward with African Americans who moved from the South to cities in the North. The blues contributed to the development of other types of music, such as the big-band jazz of the 1930s.
A. Field hollers and songs helped workers to pass the time. B. Blues music originated in the Mississippi Delta. C. Dance bands in northern cities invented the blues. D. The blues had an influence on big-band jazz musi [简答题]The Englishman has been called a political animal, and he values what is political and practical so much that ideas easily become objects of dislike in his eyes, and thinkers, miscreants, because practice is everything, a free play of the mind is nothing. The notion of the free play of mind upon all subjects being a pleasure in itself, being an object of desire, being an essential provider of elements without which a nation’s spirit, whatever compensations it may have for them, must in the long run, die of emptiness, hardly enters into an Englishman’s thoughts. It is noticeable that the word curiosity, which in other languages is used in a good sense, to mean, as a high and fine quality of man’s nature, just this disinterested love of a play of the mind on all subjects, for its own sake—it is noticeable, I say, that this word has in our language no sense of the kind, no sense but a rather bad and disparaging one. But criticism, real criticism, is essentially the exercise of this very q
[单项选择]Senator James Meeks has called off a boycott of Chicago Public Schools, organized to protest Illinois education funding system.
A. reclaimed B. proposed C. canceled D. indulged [单项选择]The Middle East has called a "museum of religious and linguistic history." The origin and growth of the Copts in the Nile valley show the truth of this statement. The present Coptic language is the latest stage in a long evolutionary process beginning with the language of the Pharaohs influenced by many conquering tongues, such as Greed, brought to the Nile Valley twenty-three hundred years ago by Alexander the Great.
The Copts axe a mixture of the oldest known inhabitants of the Middle East with every successive conqueror. Today they number four million in what is now the Arab Republic of Egypt, a country of almost forty million. The word Egypt itself comes from "Copt", the Greek way of saying Ha-Ka-Ptah, or "the land where the God Ptah is worshiped." Coptic continued as a language and a nationality when Egypt became the bread basket of the Roman Empire. By 313 A.D., when Constantine embraced Christianity in the name of the whole Roman Empire, the majority of Egyptians were Chr A. the protection of their lives and property B. the freedom to preach their religion C. the privilege of bearing arms D. the right to remain Christian 我来回答: 提交
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