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Last week, speakers at a program in Washington discussed using nanotechnology (纳米技术) to improve health care in developing countr
Last week, speakers at a program in Washington discussed using nanotechnology (纳米技术) to improve health care in developing countr
admin
2010-05-09
86
问题
Last week, speakers at a program in Washington discussed using nanotechnology (纳米技术) to improve health care in developing countries.
Peter Singer at the University of Toronto says a nanotechnology called quantum dots could be used to【B1】______ cases of malaria. He says it could offer a better way than the traditional process of looking at a person’s blood under a【B2】______ . In poor countries, this process is often not【B3】______ . As a result, sick people may get treated for malaria even if they do not have it. Such misuse of medicines can lead to drug【B4】______ . Quantum dots are particles that give off light when【B5】______ . Researchers are studying ways to program them to【B6】______ diseases by lighting up in the presence of a targeted molecule.
Experts say nanotechnology shows promise not just for【B7】______ diseases, but also for treating them. Piotr Grodzinski of the National Institutes of Health talked about how nanotechnology could make drugs more【B8】______ . He talked about cancer drugs already developed with nanotechnology.【B9】______ .
Andrew Maynard is the chief scientist for the Project on Emerging Nanotechnologies at the Woodrow Wilson Center.【B10】______ . But he also noted that there is some risk in using nano-materials. He says nanometer-sized particles behave differently in the body and the environment compared to larger particles.【B11】______ .
【B11】
选项
答案
Experts say more investment in research is needed to better understand these risks
解析
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0
大学英语六级
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