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题库 / Prep2007E1-SC-140
In human hearing, subtle differences in how the two ears hear a given sound help the listener determine the qualities of that sound.
in how the two ears hear a given sound help the listener determine
in the two ears hearing a given sound help the listener in determining
in how a sound is heard by the two ears helps the listener determine
between how the two ears hear a given sound helps the listener in determining
between how a sound is heard by the two ears help the listener in determining
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(A) 正确，difference in sth，help sb do sth。
(B) in the two ears hearing … 去掉how改变原文要表达的含义;help in doing用法错误。
(C) 被动语态的表达没有必要;helps应该是help，因为其主语是复数differences。
(D) between应该是用于表达“二者之间”的含义，用于此处不正确;helps应该是help。
(E) between应该是用于表达“二者之间”的含义，用于此处不正确;被动语态的表达没有必要。
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