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  3. There is a growing concern throughout the world that the use of stem-cell research, the process whereby certain cells are extrac

There is a growing concern throughout the world that the use of stem-cell research, the process whereby certain cells are extrac

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问题     There is a growing concern throughout the world that the use of stem-cell research, the process whereby certain cells are extracted from fetuses for future cloning purposes, may lead to a moral dilemma on the nature of cloning technology.
    Indeed, certain professionals in the field of cloning will likely face a difficult moral choice in the near future. Embryonic cells are currently extracted from aborted fetuses and then used to generate organs that replace missing or diseased ones in humans. The potential for such swapping of injured or missing limbs is enormous. Amputated arms and diseased livers could be replaced by newly cloned ones by adapting such embryonic cells. However, certain anti-abortion groups have already decried the use of aborted fetuses and pledged to boycott any more such research.
    In the United States, President Bush recently signed an executive order banning the use of any Federal money for the purpose of human cloning. However, many political observers note that private research into human cloning continues unabatedly and that, even if the United States supported and managed to enforce an outright ban in both the public and private sectors, competition from other countries would put pressure on US firms to develop their own cloning technology.
    A new option has recently been developed to weaken opposition to cloning efforts. New research has uncovered the use of similar stem-cells in fat tissue. The use of such tissue is not as politically volatile since it avoids the issue of abortion. Moreover, proponents of such cloning technology often cite the enormous benefits to medical science that reproductive cloning could reap. Cloning technology could finally cure certain diseases and ailments that are currently untreatable.
    However, the prospect of playing god with human genetics has made many weary of pursuing human or partial human cloning. As the successful cloning of Dolly the sheep proved, human cloning may only be a few decades away. For many, the ethical and legal consequences of responding to new technologies that advance the field of cloning have been difficult. Can governments, citizens and private groups come to a consensus on the use and limitations of cloning? Or will we end up with a new generation of monsters, spawned from our desire for eternal life?
The text is mainly about______.
选项 A、how cloning is bad for society
B、how cloning may help our lives
C、the dangers and possible benefits of cloning
D、the political consequences of cloning
答案C
解析 属主旨思想题。文章第一段指出现状：克隆技术的性质引发道德难题。第二段阐述具体事实以及反对方的意见；第三段介绍政府的干预；第四段给出了支持克隆技术一方的观点，即给人类带来的好处；最后一段提出克隆技术可能带来的后果。由此可知，选项C正确。选项D、B、A分别在第三、四段及最后一段中提到，概括不够全面。
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