Now you'll hear the two long conversations.
Conversation One
W: Hey, Mike! Did you attend Mr. Johnson's seminar on the History of Chicago?
M: Yes, I did. I didn't notice you were there, too.
W: I was late for it. Wasn't it a great seminar? I have learned so much!
M: It certainly was. [19]I hadn't understood that Chicago was such a young city, less than 200 years old.
W: Yes, I thought it was an old city before, but it turned out that I was wrong. You still remember what Mr. Johnson said? The army fort, Fort Dearborn, was built in 1803 in the place that would become Chicago. Chicago didn't officially become a town until 30 years later, in 1833.
M: [20]Yes, and when it officially became a town in 1833, it was very small. It had a population of only 350. Think about that, only 350 people! It was really a tiny town by then.
W: But it's a pity that after Chicago had grown, much of it was destroyed in a fire. Just imagine! What a big fire it was!
M: [21]The Great Chicago Fire was in 1871. Chicago wasn't even forty years old at the time, but it had grown much bigger.
W: Yet only twenty-two years later, in 1893, Chicago was able to host a World's Fair. It was such a huge development for a city.
M: Yes. Chicago had been rebuilt after the fire and was eager to show itself off to the rest of the world at the World's Fair in 1893.
W: [22]I will attend another seminar on the Economy of Chicago next week. Mr. Johnson will talk about the economy specifically. Will you be there too?
M: [22]Yes, so I will see you next Thursday.

Questions 19 to 22 are based on the conversation you have just heard.
19. What had the man thought about Chicago before he attended the seminar?
正確答案：C
解析：男士說自己不知道原來芝加哥這么“年輕”。所以選C。從選項可以預測問題與“他原來的想法”有關，很有可能“他原來的想法”是不正確的。A和C意思相反，其中一個是答案。
20. What do we learn from the conversation about Chicago?
正確答案：C
解析：根據原文，芝加哥正式成為城鎮的時候，人口只有350人。所以選C。從選項可以預測問題與芝加哥的情況有關。C和D選項有共同的題干，注意聽原文的時候在選項旁邊做簡單的正誤判斷。
21. What do we learn about the Great Chicago Fire from the conversation?
正確答案：對話提到，芝加哥大火發生在1871年，而當時芝加哥正式成為城市還不到40年的時間。所以B正確。從選項可以預測，“It”是發生在芝加哥的一件大事。聽到原文中提到數字的時候，就應該在選項旁做記錄。
22. What will the two speakers do next week?
正確答案：B
解析：根據對話，男士和女士下周還要參加Mr. Johnsons的講座，講座的內容是“芝加哥的經濟”。所以選B。從選項預測，題目是問對話的雙方將要做什么事情。最后一題，往往處在對話雙方的最后一個話輪。