题目内容

All the following statements are true EXCEPT

A. a relatively small number of the volunteers had large or fast-growing nodules.
B. almost all those with large or fast-growing nodules were found to have lung cancer.
C. all the volunteers were at high risk for lung cancer.
D. most of the volunteers tested negative during screening.

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According to the passage, good guidelines for lung cancer screening

A. are a little bit too costly.
B. do not exist yet.
C. are being implemented.
D. have been developed.

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CT Scans and Lung Cancer
Small or slow-growing nodules (小结节) discovered on a lung scan are unlikely to develop into tumors over the next two years, researchers reported on Wednesday.
The findings, reported in the New England Journal of Medicine, could help doctors decide when to do more aggressive testing for lung cancer. They could also help patients avoid unnecessarily aggressive and potentially harmful testing when lesions (损伤) are found.
Lung cancer, the biggest cancer killer in the United States and globally, is often not diagnosed until it has spread. It kills 159,000 people a year in the United States alone.
The work is part of a larger effort to develop guidelines to help doctors decide what to do when such growths, often discovered by accident, appear in a scan.
High-tech (高技术的) X-rays called CT scans can detect tumors -- but they see all sorts of other blobs (糊涂的一团) that are not tumors, and often the only way to tell the difference is to take a biopsy (活检), a dangerous procedure.
At the moment, routine lung cancer screening is considered impractical because of its high cost and because too many healthy people are called back for further testing.
Good guidelines could help make lung cancer screening practical, Dr. Rob van Klaveren of the Erasmus Medical Center in Rotterdam, the Netherlands, who led the new study, said in a telephone inter view.
The team looked at 7,557 people at high risk for lung cancer because they were current and former smokers. All received multidetector (多层螺旋) CT scans that measured the size of any suspicious-looking nodules.
Volunteers who had nodules over 9.7 mm in width, or had growths of 4.6 mm that grew fast enough to more than double in volume every 400 days, were sent for further testing. Of the 196 people who fell into that category, 70 were found to have lung cancer; 10 additional cases were found years later.
But of the 7,361 who tested negative during screening, only 20 lung cancer cases later developed.
In a second round of screening, done one year after the first', 1.8 percent were sent to the doctor because they had a nodule that was large or fast-growing. More than half turned out to have lung cancer.
The result means that if the screening test says you don't have lung cancer, you probably don't, the researchers said. "The chances of finding lung cancer one and two years after a negative first-round test were 1 in 1,000 and 3 in 1,000 respectively," they concluded.
The new study indicates that in case of small or slow-growing lung nodules

A. you cannot be too careful.
B. cancer is just a matter of time.
C. a biopsy is unnecessary.
D. more aggressive testing is a must.

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The author does NOT believe in

A. lots of scientific data.
B. Francis Bacon.
C. blind trust.
D. too much knowledge.

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Medicine and surgery are now really team sports in which

A. patients and doctors play equally important roles.
B. the patient does not have an active role to play.
C. doctors have the final say in almost everything.
D. the patient has the most important rote to play.

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All the following statements are true EXCEPT

A. a relatively small number of the volunteers had large or fast-growing nodules. B. almost all those with large or fast-growing nodules were found to have lung cancer. C. all the volunteers were at high risk for lung cancer. D. most of the volunteers tested negative during screening.

According to the passage, good guidelines for lung cancer screening

The author does NOT believe in

Medicine and surgery are now really team sports in which

A. a relatively small number of the volunteers had large or fast-growing nodules.
B. almost all those with large or fast-growing nodules were found to have lung cancer.
C. all the volunteers were at high risk for lung cancer.
D. most of the volunteers tested negative during screening.