I toured ZhangJiajie I was deeply impressed with its beautiful scenery.A. The first timeB

问题补充：

I toured ZhangJiajie, I was deeply impressed with its beautiful scenery.

A. The first time

B. For the first time

C. It was the first time

D. At first

答案：

(答案→)A. The first time

B. For the first time

C. It was the first time

D. At first

解析：四个选项中只有The first time可以作为连词，直接接从句。For the first time第一次；It was the first time第一次，后加that从句；At first首先。句意：当我第一次游览张家界时，我就对它美丽的风景流连忘返。