It's my first trip to Beijing, and I am going to get ( ) out o

It's my first trip to Beijing, and I am going to get ( ) out of it.
A、most
B、the most
C、more
D、the more
【正确答案】：B
【题目解析】：get the most out of sth.句子含义是这是我第一次去北京，我要充分利用它。