In 1492 Columbus on one of the Bahama Islands but he mistook it for an island of India.　

问题补充：

In 1492, Columbus on one of the Bahama Islands, but he mistook it for an island of India.

A lands B landedC has landed D had landed

答案：

解析：本题考察时态。动作前已经给出具体的过去时间in 1492，所以排除A和C。另外根据题目没有明确说明登陆是发生在误解之前的动作，排除D；选B

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