补充a height of 和as high as的解释（from RON）： there is a meaning shift. if you say 'dirt as high as four feet', you're implying that most of the dirt is well below the four-foot level, but that four feet is the maximum height. the correct answer choice, on the other hand, states that the height of the dirt bank is consistently three to four feet.
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发表于 2017-5-24 12:20:07
