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听力原文： We're very happy to we Icome you to the historic city of Brantford and to have you join us on one of our tours today. The entire trip will take most of the afternoon. We'll start with a fairly short tour of the city center area, driving by the main landmarks there and that will take us about half an hour or so. You'll see the city's distinctive architecture, dating back to the late eighteenth century. And we'll stop briefly at the government buildings before leaving the city center. Then, after we leave the city, we'll cross one of the oldest suspension bridges in the world. We'll proceed to the National Museum of Art, and then to our highly regarded weather observatory. If you have any questions, feel free to address them to me at any time. Now, let's begin our tour. What does the speaker say about Brantford?A.
It has unusual old buildings.
B.
It was built on a hill.
C.
It is growing quickly.
D.
It has a famous university.
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【简答题】某泡点进料的连续精馏塔中，进料组成x=0.35，系统的平均相对挥发度α=2.44，当x=0.93时，达到此分离要求的最小回流比R=（）
【单选题】Choose the best choice according to the cultural context. Your American friend tells you that his dog just died and that he is very sad. You should say:
A.
"I can't imagine how you must feel. "
B.
"I know how you feel. "
【单选题】某泡点进料的连续精馏塔中 ,进料组成 x=0.35,系统的平均相对挥发度 α=2.44, 当 xD=0.90 时 ,达到此分离要求的最小回流比 Rmin=( ).
A.
1.52
B.
1.62.
C.
1.72
D.
1.82
【单选题】Choose the best choice according to the cultural context. While you are talking with your American friend, she mentions that her grandmother died last year. You should say:
A.
"Oh, what a pity!"
B.
"I'm sorry to hear that."
【简答题】某泡点进料的连续精馏塔中 , 进料组成 =0.35, 系统的平均相对挥发度α =2.44, 当 =0.93 时 , 达到此分离要求的最小回流比 =____ .
【简答题】不虚此行 ! It's a r_______ trip!
【单选题】某泡点进料的连续精馏塔中 , 进料组成 =0.35, 系统的平均相对挥发度α =2.44, 当 =0.93 时 , 达到此分离要求的最小回流比 =____.
A.
1.90
B.
1.66
C.
1.81
D.
2.12
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