2014
高考英语阅读理解基础极品训练题（7）及答案 阅读理解---------c recently there was a major discovery in the scientific research—the mapping of all dna in a human gene（基因）is complete. couple of years ago, this seems an impossible task for scientist to accomplish. all this progress in science leads us to believe that the day, when the human being will be cloned, is
