2. 医学
  3. 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

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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.
Doubtful of the necessity of using animal organs, some scientists______.
选项 A、are to narrow the scope of organ transplants
B、switch to the development of artificial organs
C、come up with alternatives to the current problem
D、set out to pursue better ways of treating heart disease
答案C
解析 第四段提到有些人认为移植动物心脏是不必要的，他们提出了许多更好的解决办法，如：health education programs，improve artificial organs，encourage more people to donatetheir organs等。因此C项正确。alternative可供选择的解决办法(或方案)，变通办法。
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