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In an attempt to find out how different creatures see the world, psychologists a
In an attempt to find out how different creatures see the world, psychologists a
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2023-12-01
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问题
In an attempt to find out how different creatures see the world, psychologists at Brown University in the U. S. had been comparing the behavior of birds and humans.
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答案
时态错误,应把had been comparing改为have been comparing。
解析
此句没有明显的表示过去完成时的标志性时间状语,因此使用现在完成进行时即可。
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