Currently, scientists are creating new species with desired characteristics in the lab significantly faster than natural evolution creates new species. In a single generation, new species can be created and destroyed by mankind, while natural evolution could take thousands of years to do the same but only accidentally. Scientists are even able to replace defective (有缺陷的) or damaged genes with different genes to attempt to cure genetic defects. This is something that natural evolution could possibly never correct.

　　Eventually scientists will even be able to improve the quality of people. For example, imagine not only correcting your eyesight with gene treatment, but also ensuring that all of your children do not receive your old genes of poor eyesight too. Scientists will one day be able to improve the memory and intelligence of your children, so that they will do better in school and achieve more in life. Doctors and scientists will be able to customize (订制) babies before they are born just like picking options at a car store.

　　1.According to the first paragraph,______ .

　　　A. man-made evolution has improved all species

　　　B. man-made evolution has weakened some species

　　　C man-made evolution can make up for all natural losses

　　D. natural evolution won’t happen without man’s assistance

　　2. What does the underlined part “taken a back seat to” in Paragraph 2 mean?

【2016届湖南长沙市高考英语二轮阅读理解训练（65）（含答案）】相关文章：

★ 安徽省淮南市2014高考英语一轮单项选择及文章训练（18）及答案

★ 2017年高考英语二轮复习精品资料：专题16 书面表达（教学案）（教师版）

★ 贵州省贵阳市2014高考英语（新人教版）一轮阅读训练（20）附答案

★ 常熟市2014高考英阅读理解语一轮（暑假）训练题（8）及答案

★ 【优化方案】2017届高考英语二轮复习全国卷Ⅱ规范练：8（含解析）

★ 湖南省汝城二中2014届高考英语一轮复习阅读训练 (12)

★ 常熟市2014高考英阅读理解语一轮（暑假）训练题（2）及答案

★ 湖南省汝城二中2014届高考英语一轮复习阅读训练 (20)

★ 2017高考四川省广安市英语阅读理解一轮系列训练：4（含解析）

★ 辽宁省辽阳市2014高考英语单项选择一轮（暑假）训练（3）附答案