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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
admin
2017-06-29
72
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.
What is the problem the passage begins with?
选项
A、A high mortality rate of immune rejection.
B、A malpractice in heart transplantation.
C、An unusual case of organ transplant.
D、A shortage of human organs.
答案
D
解析
细节题。本题题意是:“本段文字是以什么问题开始的?”第一段中举了一个病患缺少心脏供源的例子。最后一句话说“每天很多人死去仅仅因为没有足够的器官供应。”所以选D“器官短缺”。
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