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  3. There is a substantial body of evidence showing that HIV causes AIDS—and that antiretroviral treatment(ART)has turned the viral

There is a substantial body of evidence showing that HIV causes AIDS—and that antiretroviral treatment(ART)has turned the viral

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问题     There is a substantial body of evidence showing that HIV causes AIDS—and that antiretroviral treatment(ART)has turned the viral infection from a death sentence into a chronic disease. Yet a small group of AIDS denialists keeps alive the conspiratorial argument that ART is harmful and that HIV science has been corrupted by commercial interests. Unfortunately, AIDS denialists have had a disproportionate effect on efforts to stem the AIDS epidemic. In 2000, South African President Thabo Mbeki took these claims seriously, opting to debate the issue, thus delaying the introduction of ART into the South African public health sector. At least 330,000 South Africans died unnecessarily as a result.
    The "hero scientist" of AIDS denialism, University of California, Berkeley, virologist Peter Dues-berg, argues that HIV is a harmless passenger virus and that ART is toxic, even a cause of AIDS. He has done no clinical research on HIV and ignores the many rebuttals of his claims in the scientific literature. In 1993, John Maddox, then editor of Nature, complained that Duesberg was "wrongly using tendentious arguments to confuse understanding of AIDS," and that because he was not engaging as a scientist, he would no longer be granted an automatic "right of reply" .
    Efforts by scientists to defend science are supplemented by pro-science activists operating on the Internet. Physician, author, and blogger Ben Goldacre argued in his Guardian column Bad Science that a "ragged band of bloggers from all walks of life" has been very successful at exposing pseudoscientific claims and fraudulent alternative practitioners selling quack cures. The Internet now poses a double-edged sword for AIDS denialists. It is becoming a tougher place for people to insulate themselves in a comfortable cocoon of the like-minded. While the web allows denialists to advertise their ideas and build networks, it also exposes potential converts to scientific rebuttals of their claims, as well news about the deaths of the "living icons" -high-profile HIV-positive people who rejected ART.
    The key living icon for AIDS denialism was Christine Maggiore. She founded Alive & Well AIDS Alternatives(an organization with Duesberg on its board), campaigned against the use of ART to prevent mothers passing HIV to their babies, and met President Mbeki. Despite her 3-year-old daughter’s succumbing to AIDS, Maggiore remained staunchly opposed to HIV science and ART. She opted for alternative therapies and died at the age of 52, from AIDS-related infections.
    Scientists often have a tough time responding to antiscience conspiracy theories because their integrity is impugned by the conspiratorial moves made against them. But precisely because living icons like Maggiore lent credence to AIDS denialism by appearing to offer "living proof" that the science of HIV pathogenesis and treatment is wrong, pro-science activists maintain a list of denialists who have died of AIDS. The weapons of science and reason are still very much in contention, but the gloves have come off in a broader struggle over credibility.
In the author’s view, living icons like Maggiore serve in the HIV science as______.
选项 A、a powerful weapon
B、a double-edged sword
C、a feeble angel
D、a wicked devil
答案B
解析 由第四段末句可知“活着的圣像是艾滋病反对者的偶像”，第五段则主要介绍了马乔里这一圣像在反对HIV科学中的典型性作用，末段前两句明确指出“由于圣像们的典型作用使得HIV科学受到非难与挑战，但与此同时，圣像们也为HIV科学提供了活生生的依据”。可见，作者认为圣像在HIV科学中的作用是双面的，[B]选项最符合文意。
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