<em>Questions 18 to 20 are based on the following conversation. At the end of the conversation, you will be given 20 seconds to answer the questions. Now listen to the conversation.</em> According to the conversation, the day is special because ______.

A、 many people are surfing the net on that day
B、 it is an anniversary of the internet
C、 the net brought about no changes until that day
D、 big changes will take place on that day

【正确答案】 B

【答案解析】