作者twlarrywu (我要鸡妹鸡妹)
看板GMAT
标题Re: [语文] GWD10-Q9
时间Tue Jul 29 14:56:05 2008
※ 引述《neopalm (JJ......JJJJJJJ)》之铭言：
: Although exposure to asbestos is the primary cause of mesothelioma, a
: slow-developing cancer, researchers believe that infection by the SV40 virus
: is a contributing cause, since in the United States 60 percent of tissue
: samples from mesotheliomas, but none from healthy tissue, contain SV40. SV40
: is a monkey virus; however, in 1960 some polio vaccine was contaminated with
: the virus. Researchers hypothesize that this vaccine was the source of the
: virus found in mesotheliomas decades later.
: Which of the following, if true, most strongly supports the researchers’
: hypothesis?
: A. SV40 is widely used as a research tool in cancer laboratories.
: B. Changes in the technique of manufacturing the vaccine now prevent
: contamination with SV40.
: C. Recently discovered samples of the vaccine dating from 1960 still show
: traces of the virus.
: D. In a small percentage of cases of mesothelioma, there is no history of
: exposure to asbestos.
: E. In Finland, where the polio vaccine was never contaminated, samples from
: mesotheliomas do not contain SV40.
: 请教此题答案为 C 亦或 E ?
: 好像还没有确定的答案，麻烦各位了！谢谢
伤咖不能上..就来这求救了~~~
请问C为什麽不可以??
E我都误以为是无关..题目讲contaminated...E讲never contaminated...哀...结果是答案><"
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