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医学
Fourteen-year-old Sean MeCallum lay in a hospital bed waiting for a new heart. Without it, Scan would die. Sean’ s case is not u
Fourteen-year-old Sean MeCallum lay in a hospital bed waiting for a new heart. Without it, Scan would die. Sean’ s case is not u
admin
2013-10-31
59
问题
Fourteen-year-old Sean MeCallum lay in a hospital bed waiting for a new heart. Without it, Scan 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 fight activists. They protest that the whole idea of using animal organs is cruel and unjust; some scientists also fear such transplants may transform 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 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、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
第一段提到Sean MeCallum正在等待可供移植的心脏,等不到的话他就会面临死亡。因为there just aren’t enough human organs to go around.没有足够的人体器官够分配使用。go round够许多人用,足够分配。
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