单项选择题
Questions 16 is based on the following news. At the end of the news item, you will be given 10 seconds to answer the question. Now listen to the news.
What happened on Monday? （）
A．A train crash occurred causing minor injuries.
B．Investigator found out the cause of the accident.
C．Crews rescued more passengers from the site.
D．A commuter train crashed into a building.