Questions 9-13
·You will hearfive speakers talking about advantages or disadvantages about cloning.
·For questions 9-13, choose from the list A-F which advantage or disadvantage they are talking about.
·Use the letters only once. There is one extra letter which you do not need to use.
9. Speaker 1: ______
10. Speaker 2: ______
11. Speaker 3: ______
12. Speaker 4: ______
13. Speaker 5: ______
- A. The element of uncertainty
- B. Reverse the aging process
- C. Helping infertile couples
- D. Potential benefits to modern medicine
- E. Improving food supply
- F. The potential for abuse
参考答案：D
解析：[听力原文]
Even today, the full potential of stem cells has not been fully explored. The issue of stem cells has led to controversy because embryos are generally used and they have to be destroyed for the cells to be used. However, a number of researchers believe that stem cells will eventually change the face of medicine as we know it. Given the fact that the ceils can be manipulated to mimic other types of cells, this can provide new ways to treat diseases like cancer and Alzheimer’s. Cloning also offers hope to persons needing organ transplants. People requiring organ transplants to survive an illness often wait years for a suitable donor. In many cases these patients die waiting, as there are long lists of people requiring organs. Theoretically, cloning could eliminate this by producing more animals that can act as suitable donors.
