英语三级A模拟试题题库
本试题来自：（2008年英语三级A模拟试题，）单项选择：Part Ⅳ Translation
Directions: This part, numbered 61 through 65 is to test your ability to translate English into Chinese. After each of the sentences numbered 61 through 64, you will read four choices of suggested translation. You should choose the best translation and mark the corresponding letter on your Answer Sheet. And for the paragraph numbered 65, write your translation in the corresponding space on the Translation/Composition Sheet.We have to live in art if we would be affected by art. We have to paint rather than look at paintings, to play instruments rather than go to concerts, to dance and sing and act ourselves, engaging all our senses in the ritual and discipline of the arts.答案解析：如果要被艺术感染，我们就得亲身投入艺术实践。我们得去画画而不是去观赏画，去演奏乐器而不是去听音乐会，…… 或者
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单项选择题：（)John was made ______ the truck for a week as a punishment.A．to washB．washingC．washD．to be washing答案：有，答案解析：有，单项选择题：（)Whom would you rather ______ with you, Peter or JohnA．have goB．have to goC．have goneD．having go答案：有，答案解析：有，
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英语三级A模拟试题热门试卷2009-Dry matter, nitrogen and phosphorus accumulation, partitioning and remobilization as affected b_百度文库
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Tourism，a major ___ of income for the city,may be seriously affected by the atypical pneumonia.
root这四个极品真是出得好....真是任君选择!!求大伙解释..尽量详细..谢谢！！
提问者采纳
应该选C。这个题目的大致意思是：旅游业，这个城市收入的主要来源，可能被非典型肺炎严重地影响了。这四个词都有源的意思，但是各自强调的重点不一样。resource是指资源，通常加上其他词语组成像自然资源，人力资源等等词组；origin指的是起源，由来，起因等等；source具有来源的意思；最后root是指根源，比如，the root of all evil指万恶之源。综合以上来看，还就是source能够恰当的表达出这句话的意思。
提问者评价
很好.谢谢..@@!!
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收入来源一般用 source， 故选C 再如：This account provides you with a ready source of income. 这个户头为你提供了一个现成的收入来源. Have you any other source of income apart from your job? 除了工作收入之外，你还有其它的经济来源吗？
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出门在外也不愁Functional study in a yeast model of a novel succinate dehydrogenas...
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2009 May 15;18(10):1860-8. doi: 10.1093/hmg/ddp102. Epub
2009 Mar 4.Functional study in a yeast model of a novel succinate dehydrogenase subunit B gene germline missense mutation (C191Y) diagnosed in a patient affected by a glomus tumor.1, , , , , , , , .1Department of Genetics, Biology of Microorganisms, Anthropology and Evolution, University of Parma, Parma, Italy.AbstractMutations of succinate dehydrogenase (SDH) subunits B, C and D are associated to pheochromocytoma/paraganglioma (PGL) development. The mechanisms linking SDH mutations to tumorigenesis are currently unknown. We report a novel germline missense SDHB mutation (C191Y) in a patient affected by a glomus tumor. The missense mutation hits an amino acid residue conserved from mammals to the yeast Saccharomyces cerevisiae. The pathogenic significance of the human mutation was validated in a yeast model. SDH2(C184Y) mutant allele equivalent to human SDHB(C191Y) did not restore the OXPHOS phenotype of the Deltasdh2 null mutant. In the mutant, SDH activity was also abolished along with a reduction in respiration. Sensitivity to oxidative stress was increased in the mutant, as revealed by reduced growth in the presence of menadione. Remarkably, the frequency of petite colony formation was increased in the mutant yeast strain, indicating an increased mtDNA mutability. Histochemistry demonstrates that SDH activity was selectively absent in the patient tumor tissue. Overall, our results demonstrate that the C191Y SDHB mutation suppresses SDH enzyme activity leading to increased ROS formation and mtDNA mutability in our yeast model. These findings further our understanding of the mechanisms underlying PGL development and point to the yeast model as a valid tool to investigate on the possible pathogenic relevance of SDH novel mutations and/or rare polymorphism.PMID:
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