【題目】The Wall Street Journal reports several research studies conducted over the past few years show a persons personality changes _____ time.

A. in B. on C. without D. over

【答案】D

【解析】試題分析：考查介詞。句意：華爾街日報的研究顯示幾年一個人的行為展示了一個人隨時間消磨過去的改變。over time固定搭配，意思是隨時間消磨，故選D。

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