【题目】他们在9点开始上课。( )
A.They start school at 9 o’clock. B.They walk to school at 9 o’clock.
【答案】A
【解析】
A. They start school at 9 o’clock.他们在9点开始上课。B. They walk to school at 9 o’clock.他们九点走路去上学。根据所给中文，故选A。
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