2. 外语
  3. The medical center couldn’t ______ which group the flu virus belonged to owing to the lack of more blood samples.

The medical center couldn’t ______ which group the flu virus belonged to owing to the lack of more blood samples.

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问题 The medical center couldn’t ______ which group the flu virus belonged to owing to the lack of more blood samples.
选项 A、scan
B、discern
C、testify
D、disclose
答案B
解析 由于缺少足够的血样，医疗中心无法识别出这种流感病毒的类别。本题是考查动词的词义辨析。scan“细查，审察”；discern“识别，认出”；testify“提供证据，证明”；disclose“揭露，泄露”。
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