单选题
John and Mark became separated (分开) because ______.
A、
John had to stay in the boat to radio for help
B、
John couldn't control (控制) the boat and drifted away
C、
There wasn't room for both John and Mark on the buoy
【正确答案】
B
【答案解析】
[考点] 推理题
[解析] 从文中第2段倒数两句可知“John 不知道如何使用收音机。他漂流了12个小时没有被发现。”
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