2. 外语
  3. Fourteen-year-old Sean MeCallum lay in a hospital bed waiting for a new heart. Without it, Sean would die. Sean’s case is not un

Fourteen-year-old Sean MeCallum lay in a hospital bed waiting for a new heart. Without it, Sean would die. Sean’s case is not un

admin2017-06-29  82
问题     Fourteen-year-old Sean MeCallum lay in a hospital bed waiting for a new heart. Without it, Sean would die. Sean’s case is not unusual. Everyday many people die because there just aren’t enough human organs to go around.
    Now scientists say they can alter the genetic make-up of certain animals so that their organs may be acceptable to humans. With this gene-altering technique to overcome our immune rejection to foreign organs, scientists hope to use pig hearts for transplants by the year 2008.
    That prospect, however, has stirred up strong opposition among animal right activists. They protest that the whole idea of using animal is cruel and unjust. Some scientists also fear such transplants may transmit unknown diseases to humans.
    Others believe transplanting animal organs into humans is unnecessary. Millions of dollars spent on breeding pigs for their organs could be better spent on health education programs. They believe seventy-five percent of the heart disease cases that had lead to a need for organ transplant are preventable. The key is to convince people to eat healthfully, and not to smoke or drink alcohol. Scientists could also use research funds to improve artificial organs.
    Still others believe that though new inventions and prevention programs may help, spending money to encourage more people to donate their organs is an even better idea. If enough people were educated about organ donations, everyone who needed an organ could be taken off the waiting list in a year.
It can be inferred from the concluding paragraph of the passage that______.
选项 A、the gene-altering technique will help those waiting for organ transplants
B、the present supply of human organs still has potential to be explored
C、people prefer the use of animal organs for medical purposes
D、the gene-altering technique leaves much to be desired
答案B
解析 推断题。本题题意是：“从本段文字的最后一段可以推断，目前人类器官供应仍有余地去挖掘。”最后一段告诉我们也有人认为我们应该花钱鼓励人们捐献器官是个更好的主意。如果有足够的人受到器官捐献的教育，那么等着器官移植的人在一年之内都可从等待名单上消失。从此可以看出，器官捐献的前景很广阔。
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