题目内容
The word "probe" in line 25 is closest in meaning to（）
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Primitive humans probably did not (deliberately cook) food until (long) after they had learned (to use )fire for light and (warm.)（）
The word "precise" in line 13 is closest in meaning to（）
According to the passage, the main disadvantage of person-on-the-street interviews is that they（）
The word "surge" in line 18 is closest in meaning to（）
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