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Questions 19～21 are based on the following conversation. Why was the man relieved at last
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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) 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 X-rays called CT scans can detect tumors-but they see all sorts of other blobs (模糊的一团) 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 guideline could help make lung cancer screening practical, Dr. Rob van Kiaveren of the Erasmus Medical Center in Rotterdam, the Netherlands, who led the new study, said in a telephone interview. 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 modules. Volunteers who had nodules over 9.7 mm in width, or had growth 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 researcher 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. All the following statements are true EXCEPT______.
How does the author interpret (痊释) love at the end of the passage
Text Liwan is the name of Guangzhou’s southwest district, bordered by Renmin Lu to the south and west. Not so long ago, in the (26) 1900s, this area of the city was renowned (27) its Cantonese restaurants, gardens, teahouses and boat rides on (28) many waterways. This was at a time (29) the Liwan area was (30) into a new town in much the same way (31) the Tianhe area is now becoming the place to be in Guangzhou. Today, though, the Liwan district (32) rapid development (33) new high-rise apartment buildings are mushrooming everywhere. Most of the rivers that crossed the area (34) now disappeared, and (35) we can get to a boat ride is hiring a pedal boat on Liwan Lake. Fortunately, some attempt is (36) to preserve the area’s architectural and cultural heritage, particularly on the streets around Liwan Lake Park. On Longjin Xi Lu, for instance, you can still see some of the Xiguan houses and (37) unique wooden doors. These large three or four-story grey-brick houses were built (38) a Western style, and the interiors were decorated with the best of local crafts, (39) stained glass windows and (40) wooden furniture. They were the (41) of the neighborhood at the turn of the last century. As well as these Xiguan houses, the area (42) has some large European-style stone buildings. The Liwan Museum is (43) in one of these colonial buildings. It was built in 1912 for the local branch manager of a Hong Kong bank. The museum is stocked (44) with memorabilia (大事记) from Liwan’s colorful past—old photographs, maps, Cantonese opera costumes and (45) scrolls (名册). To find the museum, walk south along Longjin Xi Lu from the Liwan Lake Park’s entrance till the crossroads, then turn right.
Taking a Nap During the Day Medical experts say most Americans do not get (51) sleep. They say more Americans need to rest for a short period in the middle of the day. They are advising people to sleep lightly before (52) with other activities. One study earlier this year found that persons who sleep for a few minutes during the day were less (53) to die of disease. The study followed more than 2,300 Greek adults (54) about six years. Adult who rested for half an hour (55) three times a week had a 37 percent lower risk of dying from heart disease than those who did not nap. Study organizers said the strongest evidence was in working men. They said naps might improve (56) by mitigating tension caused by work. Some European and Latin American businesses have supported the (57) of napping for many years. They urge people to (58) work, go home and have a nap before returning. In the United States, some companies let workers rest briefly in their offices. They believe this reduces in their offices. They believe this reduces (59) and accidents, and (60) increases the amount of work a person can do. Sleep experts say it is likely that people make more mistakes at work than at other times. They say people should not carry out important duties when they feel (61) . And they say the best thing to do is to take a nap. About twenty minutes of rest is (62) you need. Experts say this provides extra energy and can increase your effectiveness (63) the end of the day. But experts warn that a nap (64) last no more than twenty to thirty minutes. A longer nap will put the body into deep sleep and waking up will be (65) .
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