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【題目】Some students are so _____ that they often make mistakes in their homework.

A. careful B. cheerful C. careless D. successful

【答案】C

【解析】句意：有些學生如此粗心以至于他們經常在作業(yè)中犯錯。careful認真的；cheerful高興的；careless粗心的；successful成功的。根據they often make mistakes in their homework.

可知在作業(yè)中經常出錯，故表示粗心，故選C。

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