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By using ears one can tell the direction ____ a sound comes.

     A. in which      B. from which       C. with which      D. through which

A                       


解析:

irection常與in連用。    

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假如英語課上老師要求同學們交換修改作文，請你修改你同桌寫的以下作文。文中有10處錯誤，要求你在錯誤的地方增加、刪除或修改某個單詞。

增加：在缺詞處加一個漏字符號(∧)，并在其下面寫上該加的詞。

刪除：把多余的詞用斜線(＼)劃掉。

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