2. 外语
  3. The young scientists got the first-hand information they needed in the scientific research____________(通过实地考察).

The young scientists got the first-hand information they needed in the scientific research____________(通过实地考察).

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问题 The young scientists got the first-hand information they needed in the scientific research____________(通过实地考察).
选项
答案by carrying out observations on the spot
解析 本题语法点考查介词by引导的词组作方式状语的用法，注意“实地”的表达法是on the spot。carry out有两个意思(1)实现，实行，此句为该意。(2)把……进行到底，完成，例句：They decide to carry out the great cause regardless of losing their lives. (他们决定将这项伟大的事业进行到底，就算失去生命也再所不惜。)
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大学英语六级

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