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1、2020 年職稱英語(衛(wèi)生類)教材概括大意文章及練習(xí)(7)Screen Test1. Every year millions of women are screened with X-rays to pick up signs of breast cancer.If this happens early enough,the disease can often be treated successfully.According to a,survey published last year,21 countries have screening programmes.Nine of them,
2、including Australia,Canada,the US and Spain,screen women under 50.2. But the medical benefits of screening these younger women are controversial,partly because the radiation brings a small risk of inducing cancer.Also,younger women must be given higher doses of X-rays because their breast tissue is
3、denser.3. Researchers at the Polytechnic University1 of Valencia analysed the effect of screening more than 160,000 women at 11 local clinics.After estimating the women's cumulative dose of radiation,they used two models to calculate the number of extra cancers this would cause.4. The mathematic
4、al model recommended by Britain's National Radiological Protection Board( NRPB)predicted thatthe screening programme would cause 36 cancers per 100,000 women,18 of them fatal.The model preferred by the UN Scientific Committee on the Effects of Atomic Radiation led to a lower figure of 20 cancers
5、.5. The researchers argue that the level of radiation- induced cancers is "not very significant" compared to the far larger number of cancers that are discovered and treated.The Valencia programme,they say,detects between 300 and 450 cases of breast cancer in every 100,000 women screened.6
6、. But they point out that the risk of women contracting cancer from radiation could be reduced by between 40 and 80 percent if screening began at 50 instead of 45,because they would be exposed to less radiation.The results of their study,they suggest,could help "optimise the technique" for
7、 breast cancer screening.7. "There is a trade-off between the diagnostic benefits of breast screening and its risks," admits Michael Clark of the NRPB.But he warns that the study should be interpreted with caution."On the basis of the current data,for every 10 cancers successfully det
8、ected and prevented there is a risk of causing one later in life.That's why radiation exposure should be minimised in any screening programme."詞匯:polytechnic 多工藝的 cumulative 遞增的radiological 放射性的 contract 感染optimize 限度地完善 trade-off n. 平衡注釋:Polytechnic University :理工大學(xué)練習(xí):1. Paragraph 2 2. Par
9、agraph 3 3. Paragraph 4 4. Paragraph 5 A Harm Screening May Do to a Younger WomanB Investigating the Effect of ScreeningC Effects Predicted by Two Different ModelsD Small Risk of Inducing Cancers from RadiationE Treatment of CancersF Factors That Trigger Cancers5. Early discovery of breast cancer ma
10、y6. Advantages of screening women under 50are.7. Delaying the age at which screening starts may.8. Radiation exposure should be .A be costlyB harmfulC save a lifeD still open to debateE reduce the risk of radiation triggering a cancerF reduced to the minimum答案與題解:1. A A 說的是:用 X 射線檢查可能對年輕女人不好。下面是第二段
11、講的意思:但是,用X射線檢查年輕女人,就醫(yī)學(xué)上的好處而論,是有爭 議的 , 部分原因是輻射有誘發(fā)癌癥的小小的危險(xiǎn)。另外 , 年輕女人乳房 組織緊密,給予的X射線的劑量要多一些。2. B B說的是:調(diào)查用X射線檢查的結(jié)果。第三段的第一句話是這 么說的:Valencia理工大學(xué)的研究人員分析了 11個(gè)社區(qū)診所用X射線 檢查 16 萬以上女人的結(jié)果。3. C C說的是:兩種不同的模型預(yù)測的結(jié)果。第四段講的是 ,兩種 不同的數(shù)學(xué)模型在預(yù)測用 X 射線檢査女人誘發(fā)癌癥的結(jié)果是不一樣的。 C概括了這段話。4. D D 說的是:輻射誘發(fā)癌癥的危險(xiǎn)是很小的。第五段的第一句話 是這么說的: The resear
12、chers argue that the level of radiation-induced cancers is "not very significant" comparedto the far larger number of cancers that are discovered and treated. 研究人員爭辯說 , 與發(fā)現(xiàn)后接受治療的癌癥數(shù)字相比 , 由輻射 誘發(fā)癌癥的數(shù)字是很小的。5. C C 與題干生成: Early discovery of breast cancer may save a life. 乳腺癌發(fā)現(xiàn)得早也許能挽救生命。答案能夠從第一段中 找到。6. D D 與題干生成: Advantages of screening women under 50 are still open to debate. 對50歲以下的女人用 X射線檢查的好處 仍然是有爭議的。第二段的第一個(gè)句子是這么說的: But the medical benefits of screening these younger women arecon troversial 但是,用X射線檢查年輕女人,就醫(yī)學(xué)上的好處而論,是有爭議的這兩個(gè)句子用詞有些差別,基本意思是相同的。7. E E 與題干生成: Delaying the age at whic
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