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导语：以下英语网为大家整理了全面的职称英语考试历年真题及答案解析，《职称英语考试试题汇总：历年真题及答案解析》供大家参考学习。更多职称英语考试试题敬请关注英语网！ 【推荐】关注英语网微信：yingyuwang2013，更快获取真题答案及成绩查询信息。 第3部分：概括大意与完成句子（第23~30题，每题1分，共8分） 下面的短文后有2项测试任务：（1）第23~26题要求从所给的6个选项中为第2~5段每段选择1个最佳标题；（2）第27~30题要求从所给的6个选项中为每个句子确定1个最佳选项。 Unlocking the Human Genome（基因组） 1A project to unlock secrets-what scientist could resist that challenge?This is what many scientists are doing as they work on the Human Genome Project.The aim of the project is to decode（破译）all of the some 100,000 genes in the human body.Scientists are using DNA fingerprinting techniques to do the decoding. 2DNA is the substance found in the chromosomes（染色体）of a cell.A chromosome is a chain of genes.Each gene carries a piece of genetic information.At any one moment in a cell,thousands of genes are turned on and off to produce proteins（蛋白质）.The challenge for scientists is to find out what role each gene plays in protein production.At some point this decoding will be complete.Then scientists will have a map of an ideal genome,or a picture of the total genetic nature of a human being.The ideal genome is called a consensus（交感）genome.Everything works well in a consensus genome. | 
