--- Do you know the West Lake in Hangzhou?
--- Yes, this is the third time that I ______ this beautiful city.A.visitB.visitedC.have visitedD.had visited
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C解析试题分析：考查时态：句意：--你知道杭州的西湖吗？--是这是我第三次到这个美丽的城市。this is the third time that从句中用现在完成时，如果是this was the third time that从句中就用过去完成时，选C。
考点：考查时态