What is the reseamh at Johns Hopkins University about? How did the researchers carry out their study?

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问题 What is the reseamh at Johns Hopkins University about?
How did the researchers carry out their study?

选项 A、They studied the findings of several previous research projects.
B、They conduced a questionnaire with 411 pilots.
C、They collected data from the database at the Johns Hopkins University.
D、They analyzed the circumstances of the crashes involved.

答案A

解析答案可在第3段第1句中找到。

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本试题收录于：职称英语理工类A级题库职称英语分类

职称英语理工类A级

职称英语

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What is the reseamh at Johns Hopkins University about? How did the researchers carry out their study?

职称英语理工类A级

职称英语

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Accordingtothepassage,theattempttoeradicatetheAIDSvirusWhatdoHo’swords"Bearinmindthatundetectabledoesnote

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