Question

【题目】假如今年国庆节你去了北京，发现故宫、长城等每一个景点都人山人海，你可以说：
A.Wow! It's a mountain of people.
B.Wow! It's a river of people.
C.Wow! It's a sea of people.

Answer 1

【答案】C
【解析】a sea of people：人山人海。如：The square was a sea of people.根据题意选C。