问题
选择题
_____ they visited the Science Museum,they showed great interest in everything they saw. [ ]
A. The first time
B. For the first time
C. At first
D. At the first time
答案
答案:A
_____ they visited the Science Museum,they showed great interest in everything they saw. [ ]
A. The first time
B. For the first time
C. At first
D. At the first time
答案:A