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听力原文： The U. S. Space Agency NASA says Russia's orbiting Mir space station has lost its primary and backup oxygen sources. If the problem is not fixed, the 3 - member crew would have to abort the mission. But, a Russian space official in Moscow told Ruters News Agency that only the primary generator developed trouble and that the unit was repaired by the crow. More about the latest problem on heard the space station from VOA 's Nick Simming.
"The U. S. Space Agency says Mir's two primary sources of oxygen have stopped working and now there is only several days'supply of oxygen inside Mir's cabin. Mir's backup oxygen generating candles failed Monday just after the normal oxygen supply system used by the spacecraft un- expectedly shut down. That normal oxygen source, a method that extracts oxygen from water, had been turned off for several days to conserve energy while Mir's crew performed re- pairs. But when the system was activated Monday, it overheated and automatically shut down. NASA's problem is not fixed soon, the two Russians and one American on board will have to abort. This problem is the most serious to plague the space station which has endured power loses, computer mal- function and even a collision with a supply vessel all in the past six months. Nick Simming VOA News, Washington."
The U.S. Space Agency NASA says ______ orbiting Mir space station has lost its primary and backup oxygen sources.
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SECTION B INTERVIEW
Directions: In this section you will hear everything ONCE ONLY. Listen carefully and then answer the questions that follow. Questions 1 to 5 are based on an interview. At the end of the interview you will be given 10 seconds to answer each of the following five questions.
Now listen to the interview.
听力原文：Chairwoman: Ladies and gentleman. May I have your attention please？ My name is Mary Smith, and I'm going to chair this morning's opening session. It is my greatest pleasure this morning to welcome you, my colleagues from all over the world, go our 16th biennial Cryogenic Engineering Conference held jointly for the nineth time in succession with the International Cryogenic Materials Conference.
Our keynote speaker at the morning's plenary session will be Dr Scott Macleod from Canada. Dr Macleod will review our accomplishments in the field of cryogenics on its 110th birthday, and consider where our work will lead in the future. Following Dr Macleod's keynote address, we will be honoured to hear from Dr Chen Zhili from the People's Republic of China. Dr Chen will speak on "The Development of Cryogenic Materials Science in the PRC over the Last Decade", a matter of great significance to the world scientific community as you are all very well aware.
We will have a coffee break at 10 a. m. and at 10:30 a.m. the first set of workshop sessions will begin. Please check your conference brochuse programme summary for work- shop room locations. One additional paint, at the request of several of our colleagues from abroad, a special workshop has been set up under the heading: "Concrete Plans for Implementing Greater International Cooperation on Research Projects. "The session will take place in the Teawood suite on the fourth floor at 8:00 tomorrow morning. Dr Saul Lloy from MIT has kindly agreed to chair that meeting.
Voice I: Would you repeat that information, please？
Chairwoman: Yes. That's tomorrow morning at 8:00 in the Teawood Suite on the fourth floor. Dr Lloy presiding.... And now ladies and gentlemen, this morning's presentation from Dr Scott Macleod. (Applause)
Macleod: Thank you, Ms Chairwoman, Ladles and gentle- men. One hundred and ten years after Lois Cail-letet in France and Raoul Dictete in Switzerland produced our first cryogens ,we have experienced significant accomplishments and identified many opportunities. This morning I will highlight our accomplishments in the field of thermal, insulations... (Applause)
Chairwoman: Thank you, Professor Macleod. Since we're a little late, I'll ask you to save your questions and comments on professor Macleod's paper for the "History of Cryogenics" workshop this afternoon. And now I'd like to introduce to you our next speaker, Dr. Chen Zhili. His history, like so many Chinese scientists today, is a dramatic one, and his personal story parallels the dynamic achievements of his nation in the past decade. But that's the topic of his speech to- day. So I'll let him speak for himself. I present you Dr Chen Zhili. (Applause)
Chen: Goad morning, ladies and. gentlemen. I shall first ask for your forgiveness of my poor English since I haven't been in the States for several years.
Then I'd like to thank Ms Chairwoman and the conference Committee for offering me this opportunity to speak to you on a subject which is dear to my heart, It is with great pride and pleasure that I stand before you today to report the progress of my nation in the last decade in the area el Cryogenic materials science, though we are the first to point out that it were not for the generosity and aid of other nations during this period we could not have come so far so fast. In the last decade, we have suffered several setbacks, yet we have still made some breakthroughs. And today I'm going to talk on these breakthroughs... (Applause)
Chairwoman: Thank yon very much, Professor Chen, yours was indeed an enlightening overview and it is c
SECTION C NEWS BROADCAST
Directions: In this section you will hear everything ONCE ONLY. Listen carefully and then answer the questions that follow. At the end of each news item, you will be given 10 seconds to answer the questions.
听力原文： It is 23, almost 23:48 universal time. That means it's time for sports with Dave Bird mid tennis and many other things. That's right Jim. Former French Open Champions Michael Chang and fellow American Jim Courier have advanced to a quarter final meeting today at the Paris Open In- door Tournament. Chang escaped defeat in his three sets duel with Andre Medvedev of Ukraine Thursday 2:6,6:3,7:5. Medvedev held a 5:2 lead in the 3rd set before. Chang came back to win the next five games. Jim Courier had a much easier time in his match with (ah) Magnus Larsen of Sweden 6:3,6:4. Aim world Number 2 Pete Sampras made the final eight with a straight - sets win over Jan Seimerink of the Netherlands. Elsewhere Thursday unseeded Daniel Vasic of the Check Republic advanced after Frenchman Guy Forget withdrew with a back injury. Number 9 seed Wayne Ferira of South Africa took out two time French Open Champion Sergei Brugera in three sets. Jacob Hasic of Switzerland downed 10th seeded countryman, Marc Roset. And Number 12 seeded Richard Kreicheck of the Netherlands defeated his com- patriot Paul Haorhuis in straight sets.
Which player did Michael Chang defeat in the 3rd set ______.
听力原文： Do you have trouble sleeping at night？ Then maybe this is for you. When you worry about meeting sleep and twisting around, trying to find a comfortable position, you're probably only making matters worse. What happens is that your heart rate actually increases, making it more difficult to relax. You may also have some bad habits that contribute to the problem. Do you rest frequently during the day？ Do you get virtually no exercise, or do you exercise strenuously late in the day？ Do you think about sleep a lot or sleep late on weekends？ Any of these facts might be leading to your insomnia by disrupting your body's natural rhythm. What should you do then on those sleepless nights？ Don't bother with sleeping pills; they can actually cause worse insomnia, later. The best thing to do is to drink milk or eat cheese or tuna fish. They are all rich in the amino acid that helps produce in the brain a neural transmitter that induces sleep. This neural transmitter will help you relax, and you'll be on the way to get a good night's sleep. Until tomorrow's broadcast, this has been another series "Hint for Good Health" by Doctor Handison.
We can learn from the passage that when twisting around,______.
SECTION A CONVERSATIONS
Directions: In this section you will hear several conversations. Listen to the conversations carefully and then answer the questions that follow.
听力原文：W: I just read a curious fact. Did you know that people who spend less than ten minutes in a drugstore are five times more likely to make a purchase than those who spend half an hour there？
M: I saw that article, too. But I think, if someone runs into a drugstore for ten minutes, it's usually to make a specific purchase.
W: And someone .who spends more time there may be just looking.
M: Exactly. Haven't you ever gone into a store thinking that you'd buy something, and then talk yourself out of it？
W: Yes, I have. Especially when I thought I could get it for less elsewhere, or I really didn't need it after all.
M: Exactly. But if you run in to buy something specific and have very little time, you pick it up, pay for it immediately and then leave.
W: That's true. Maybe we should learn a lesson from that. Take your time and you'll spend less money.
M: I doubt if that would be true in all stores, though. In a department store, for instance, you may see a sweater or something you never intended to buy and buy it because you have time to look around.
People are more likely to make a purchase ______.
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