The word "attenuating"(Paragraph 1) most probably means Which of the following is true according to the text?

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问题 The word "attenuating"(Paragraph 1) most probably means
Which of the following is true according to the text?

选项 A、In his paper, Dr. Arien proves that HIV is weakening in Europe and Africa.
B、Two kinds of blood samples are placed in two different cell cultures to be observed.
C、Dr. Arien has made the cause of attenuation of virus clear.
D、There are 3/4 of the viruses in Dr. Arien’s study proving to be less harmful.

答案D

解析推理判断题。文中的血样采自Antwerp的诊所，其结果不能证明欧洲和非洲的情况，选项A误解了第二段的例子，故错误；由第二段中的they were placed in identical cell cultures可以判断出选项B错误；第四段第一句明确说明导致病毒弱化的原因还在调查中，所以C错误；选项D是第二段最后一句的同义转述。

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考研英语一

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