2. 外语
  3. How to Do Fewer, Better Animal Experiments For a nation of pet lovers, Britain conducts a surprising number of experiments o

How to Do Fewer, Better Animal Experiments For a nation of pet lovers, Britain conducts a surprising number of experiments o

admin2012-05-18  138
问题             How to Do Fewer, Better Animal Experiments
    For a nation of pet lovers, Britain conducts a surprising number of experiments on animals some 3 million a year. America appears to use fewer animals—just 1.1 million a year, according to official statistics, but that is an illusion. Unlike Britain’s government, American does not think rats and mice worth counting. Japan and China have even less comprehensive data than America, and animals used in research in those two countries are not protected to the same extent that they are in the West. Even so, academic centers supporting alternatives to animal testing have emerged in both places in recent years. In July China issued its first set of guidelines governing the use of animals in research.
    In an ideal world, there would be no animal testing. It is expensive and can be of dubious scientific value, since different species often react differently to the same procedure. That is why many researchers are working on ways of reducing the number of animal experiments needed and of making those that still happen more effective. However, the transition is proved easier for some types of experiments than for others, as a group of researchers in the field discussed at the sixth World Congress on Alternatives and Animal Use in the Life Sciences, held last week in Tokyo.
    The most important message from the congress was that things are going in the right direction. The number of animals used in experiments has fallen by half in the past 30 years, at least in those countries that record such things. There has also been a shift in the sort of animals used. Most of those employed today are rodents rather than dogs, cats, rabbits and monkeys. (That public opinion generally welcomes, this is, however, a good example of "cutist" prejudice for one specy over another: there is no reason to believe that rodents suffer less than other mammals.) Also, of the experiments that are still conducted, the majority are now concerned with developing and testing medicine rather than, say, checking how toxic cosmetics are. Of the animals involved each year in experiments that have to be reported to the European Commission, about 45% are used for medical and veterinary purposes and another 35% for basic biomedical research.
Many researchers are currently trying to____.
选项 A、use animals involved in research more effectively
B、slow down the transition for some experiments
C、challenge the scientific value of animal testing
D、raise the cost of using any animals in research
答案A
解析 题目问：很多研究者正试图干什么?通过阅读文章可知，由于不同的物种对相同的程序会有不同的反应，所以，一些研究者正试图减少试验用动物的数量，并提高试验用动物的效用。第二段“That is why many researchers are working on ways of reducing the number of animal experiments needed and of making those that still happen more effective．”所以，答案是A。
转载请注明原文地址:https://kaotiyun.com/show/WPnO777K
0

考博英语

相关试题推荐
随机试题
最新回复(0)