单选题
Within 30 years, humans could be debating whether to take charge of their own evolution. The average life span in the developed world will be 90, diseases will be diagnosed before symptoms appear, many humans will already be genetically modified and patients with heart diseases, cancer or dangerous infections will be treated with prescriptions tailored to their own genetic makeup, according to Francis Collins, one of the leaders of the project to sequence the entire human genome. By 2010, Collins told in a major international biotechnology forum in France this week, there could be predictive tests for at least 12 hereditary conditions, and scientists would understand the role that genes played in most common diseases. Embryoes developed by in vitro fertilization methods would be routinely scanned for genetic illnesses. Legislation to prevent genetic discrimination—the creation of an underclass denied health care, employment or insurance because of this genetic knowledge—could be in place within 10 years. By 2020, the designer drugs based on research on the human genome will be coming on to the market. The pharmaceutical industry would have produced powerful treatments for diabetes, hypertension, heart disease and schizophrenia. By 2030, if all went well, there should be comprehensive health care based on genetic knowledge, with individual medicine based on individual risk. Doctors would understand better the links between genes and environmental factors. Illnesses would be detected much earlier by molecular surveillance, even before symptoms appeared, and therapies would be more effective and more available. Collins also foresaw that by 2030, people would be arguing, as British physicist Stephen Hawking already is, that humans could start to take charge of their own evolution by altering their genes to improve the species.
单选题
Which is NOT the cause that the average life span in the developed world will be 90?
【正确答案】
C
【答案解析】[考点解析] 细节题。问题指向文章第二段,从第二段中可以找到“diseases will be diagnosed before symptoms appear”,即D,“many humans will already be genetically modified”即A,“and patients with heart diseases, cancer or dangerous infections will be treated with prescriptions tailored to their own genetic make up”即B,只有C项未涉及。所以正确的答案是C。
单选题
Which is NOT mentioned by Collins in the international biotechnology forum?
【答案解析】[考点解析] 细节题。第二段最后一句谈到了Collins的身份,“one of the leaders of the project to sequence the entire human genome”,也就是说他是人类全部基因组排序组课题的负责人之一,自然他领导着一组研究者,也是生物学方面的专家。因而只有D为被选项。
单选题
Humans will take charge of their own evolution by______.
【正确答案】
A
【答案解析】[考点解析] 细节题。最后一句提到“human could start to take charge of their own evolution by altering their genes to improve the species”,答案自然为A。