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After years of research, scientists have ______ the virus that is responsible for the disease.
After years of research, scientists have ______ the virus that is responsible for the disease.
admin
2011-02-05
23
问题
After years of research, scientists have ______ the virus that is responsible for the disease.
选项
A、recognized
B、identified
C、guaranteed
D、notified
答案
B
解析
语义连贯题。[A]“认出,承认”;[B]“确定,识别”,强调经过了一个过程才确定;[C]“保证,担保”;[D]“通知,宣告”。题干中的years of research(数年研究)提示科学家最终得到了结果,虽然这个过程漫长,但最终还是确定了这种病毒,[B]符合题意,是答案。
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0
大学英语六级
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