问题补充：
I went to Mount Hua, 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
答案：
A. For the first time
(答案→)B. The first time
C. At first
D. It was the first time
解析：考查连词短语：句意：我第一次去华山就被它的美深深震撼了。The first time可以做连词，引导时间状语从句，表示“第一次”，A. For the first time 这是介词短语，“第一次”， C. At first介词短语，首先，D. It was the first time这是强调句的前面部分，后面应该接that，选B。
