判断题

去向相关词反映用户在搜索中心词之后还有哪些搜索需求，通过过滤出关键词下一步搜索行为来源的相关词，按相关程度排序得出.

答案：正确

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单项选择题

On his seven treasure voyages, Zheng He took his men to over 30 countries or states. Which of the following waters had they not chartered?
A. The Pacific Ocean.

B. The Indian Ocean.

C. The Red Sea.

D. The Arctic Ocean.