I went to the South Lake in Hanzhong, I was deeply impressed with its beautiful scenery.
A. For the first time
B. The first time
C. At first
D. It was the first time
网友回答
A. For the first time
(答案→)B. The first time
C. At first
D. It was the first time
解析： 句意：我第一次去汉中的南湖的时候，被它的美丽的风景深深的吸引了。The first time可以做连词短语，后面接时间状语从句，A. For the first time是介词短语，不能接从句， C. At first也是介词短语，“首先”， D. It was the first time 这是第一次，也不是连词，所以选B。