2013
高考英语二轮阅读理解讲与练（答案）--网络的发展与问题（1） in a mouse that can speak acceptable? how about a dog with human hands or feet? scientists, the people that know how to make such things happen, are now thinking about whether such experiments are morally right or not. on november 10, britain’s academy of medical sciences launched a study on the use of animals with human materials in s
