【正确答案】 C

【答案解析】[听力原文]19-22
M: Is that a map? Are you going sailing or something?
W: I wish. It's a hurricane-tracking chart. It's a map of tropical ocean areas southeast of us. It follows the development of tropical storms, even hurricanes. They develop in the Caribbean and move around the Atlantic and here on the Florida coast. We got hit a lot by those winds or rain in July or August.
M: Do you think that the tropical storm is on the way?
W: Too early to tell, but we need to be prepared. The radio mentioned possible evacuation routes.
M: Really? It's that serious?
W: You'd better believe it. Late summer is hurricane season. The television updates locations and speeds every hour.
M: What did they say is out there now?
W: A couple of tropical depressions, two storms and two hurricanes.
M: What's the difference?
W: Wind velocity. A depression is the least serious actually, and a hurricane is the most serious.
M: How serious are the winds in hurricanes?
W: They have sustained winds of 74 mph and up.
M: What are file names on the map?
W: David, Arlene, Francisco, and Gina. You know weather forecasters give the hurricanes the names of people to make storms easy to identify.
M: I wonder what the status of the storm is now.
W: You can turn on the television; it has the best coverage. There is an update coming up in five minutes.
19. What is the conversation mainly about?

主旨题。由对话中的a hurricane-tracking chart及here on the Florida coast可知，对话是针对可能影响佛罗里达的天气情况展开的，所以C正确。

【正确答案】 B

【答案解析】[听力原文]
What's the weather of late summer?

信息明示题。女士说Late summer is hurricane season，由此可知B正确。

【正确答案】 A

【答案解析】[听力原文]
How is one tropical weather system distinguished from the other?

信息明示题。男士问女士几种热带天气现象的区别是什么，女士回答说是wind velocity(风速)，所以A正确。

【正确答案】 A

【答案解析】[听力原文]
How do weather forecasters identify hurricanes?

信息明示题。女士说气象预报员用人名给风暴命名以便于区分，所以A正确。