【題目】【北京市2015年中考英語試題】We usually have the first class ____ 8:00 in the morning.

A.of B.in C.on D.at

【答案】D

【解析】

試題分析：句意：我們通常在上午八點上第一節(jié)課。與時間連用的介詞主要有：at,in,on.。at主要和表示時間點的詞連用；in主要和表示一段時間的詞連用；on主要和星期幾，具體的一天，具體一天的上下午晚上，有天氣修飾的時間連用。根據(jù)該句指時間點，故選D。

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