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t? A.Christianity in Africa.B.African religious beliefs.C.African religious situation.D.Christianity and Islam in Africa. 参考答案： C 这篇文章主要是介绍非洲宗教现状，如人们的宗教信仰，宗教的影响，基督教与伊斯兰教在非洲的比较。----------------------------------------1Which sentence best summarizes the article? A.Genetic diseases have become a menace to human health.B.Humans have been successful in curing genetic diseases.C.We are different genetically from each other.D.Children are the main sufferers from genetic diseases. 参考答案： A 人类各种不同的基因中会有致病基因，由此产生基因病。二战以来，各种基因病越来越威胁到人类的健康。但随着对基因病的逐渐了解，我们将能够采取措施控制它们。 We now have a wide array of antibacterial medications and of immunizations against a variety of bacterial and viral pathogens.现在，我们有了大量的抗菌和免疫药物，使我们免受各种细菌和过滤性毒菌病原体的感染。文章首先从人类的基因各不相同, 转到带病基因, 然后叙述二战以来人类越来越受到基因病的折磨, 并给出例子, 最后阐明对人类攻克基因病持乐观态度。整个过程都围绕基因病成为人类健康的威胁这一主题。----------------------------------------2The underlined phrase “dysfunctional genes” in paragraph 2 probably means. A.Genes that are effectively functional.B.Genes that are inheritable.C.Genes that may cause diseases.D.Genes that may invalidate some organs. 参考答案： C 前缀dys意为 “带病的;有病的”;第二段最后一句指出, 直到我们受到基因病的折磨, 我们才会注意到这种基因的存在, 可以得出这种基因会致病。----------------------------------------3Which of the following diseases is NOT a genetic one? A.Sickle?cell anemia.B.Muscular dystrophy.C.Tay?Sachs.D.Diarrhea. 参考答案： D 见第四段, Diarrhea不属于基因病。----------------------------------------4According to the article, which of the following statements is TRUE? A.The dysfunctional genes in our bodies may inevitably cause diseases.B.Heart disease and cancer are the leading causes of death.C.12 percent of hospital pediatric admissions
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