题目内容

The biologist started to ________ the be-havior of birds from his childhood.


  1. A.
    observe
  2. B.
    see
  3. C.
    understand
  4. D.
    know
A
本题意在考查词语的意思辨析．全句意思为“这个生物学家从小就开始观察鸟的行为．”不可能从小就“开始了解”、“开始知道”．故不选C、D．observe指“观察，注意”，而see指“看见，看到”．
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