题目内容
听力原文：W: Could you tell me how many of your employees are women？
M: Yes, certainly. We have a very high percentage of female staff. We employ about 160 women, which is eighty percent of all our staff.
Q: How many of the employees in this organization are men？
(15)
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W: No, Simon. I hate demonstrations. I have heard the police will be standing by with tear gas.
M: Yes, but North Korea boasts it has nuclear arms.
W: One hundred ninety countries have signed the Nuclear Non-Proliferation Treaty but the issues are just too complex. There are two sides to every story. I don't understand it and I have no intention of going to a demonstration. [19] Demonstrations don't seem to accomplish anything anyway.
M: [19] Several demonstrations have changed politician's minds throughout history. As a responsible citizen I think it is important to stand up for what you believe in.
W: Leave it to someone else. As I said, if you listen to both sides of a story, both sides have some good points. [20] Why should I demonstrate and risk getting hurt for something that I am not even sure is fight？
M: You are not likely to get hurt. This will be a peaceful demonstration. I have spoken to the organizer for the university group. He insists that this will be peaceful. He advocates if you want world peace, peace begins at home—and that means right here in this city.
W: [20]/[21]You go if you want, Simon, but I plan to study for my physics exam.
M: It would only take two hours of your day. The bus leaves the campus at 11:30 and leaves downtown to return to campus at 12:45. You could eat your lunch on the bus.
W: [20]/[21]I am not going, Simon. [21] Why don't you ask the students in your political science class this after noon if they want to go？
M: They are all going.
W: Okay, Simon. I need to meet my sister for coffee now.
M: Bye then. See you in physics class tomorrow.
(20)
听力原文：W: Is Aunt Margaret in？ I have got something important to tell her.
M: Sorry, Mom has gone shopping. She won't be back until noon. Do you want to leave a message for her so that she would call you back as soon as possible.
Q: What do you think is the relationship between the two speakers？
(17)
What is the main idea of this passage？
听力原文： [31] The economic costs of noise to society are several. [29] Airports are currently operating at less capacity because of noise regulations which restrict their hours of operation. For instance, at Washington's National Airport jet traffic is not allowed from 11 pm to 7 am. Other airports restrict the use of certain runways. One estimate is that noise restrictions reduce possible airport use by 20 percent. The profitable cargo trade is especially affected by night restrictions.
In the case of airports, jet engines may be modified to reduce their noise level. One estimate is that $5.7 billion would be required to equip all existing jet engines with noise control devices. However, even taking this step will not reduce noise levels at all points to acceptable values. Some combination of methods is probably necessary.
[30]/[31]If all aircraft were made quieter by existing methods, there would be a number of economic benefits. An increase in airport capacity would occur. Property values near airports might rise. Transportation costs to and from airports could be reduced since the airports now could be located closer to population centers.
[31] Much research still needs to be done on the economic aspects of noise reduction and noise effects. Al though some of the effects of noise pollution are known, more must be discovered about its effects on health, productivity, property values and the quality of life. Furthermore, the cost of noise pollution to the economy as a whole needs to be investigated. The public must be alerted to the dangers and economic costs of noise pollution so that people may make intelligent choices and exert appropriate pressures.
(30)
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