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A．The couple could not stop by this evening.B．The couple are now living in a hotel.C．T
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A．A doctor in Qatar.B．Nurse Maitland.C．Dr. Brown.D．Agatha Christie.
听力原文：M: Sue, how do you decide what time to show a program？
W: Well, it depends on the program. We look for different types of programs for different times of the day. For example, at breakfast time, we show short news and interview program. People don't watch for long in the morning, so everything must be very short.
M: And what happens later？
W: Well, we plan programs around what people are usually doing. We have to think about prime time.
M: Prime time--what's that, exactly？
W: Prime time is the time when the largest number of people is watching TV. In this country, that's from 6 p.m. to 11 p.m. Most people have come home from work and they're relaxed.
M: And, what programs do you show then？
W: We usually show new TV series which most people like. You see, before 9 p.m., we try to show programs for everybody.
M: Oh, I see.
W: And we also need to think about the ratings.
M: Can you tell us about that？
W: Well, the ratings tell us how many people are watching each program.
M: Oh, how do you know that？ You can't ask everybody!
W: No, of course not. Well, most TV stations buy information from an audience research company. They ask a small number of people -- perhaps a few hundred-- to keep a record of what they watch. Then that gives them an idea of what everybody watches.
M: Are ratings very important？
W: Very important. Our television company is commercial. We make money by selling advertising time. If our ratings are high, we can ask a higher price for advertising time. So we're always trying to increase our ratings.
M: So in a way, the advertisers Control what you show on television.
W: Um, not directly, but in a way, yes.
(30)
听力原文： In 1977, a baby girl became seriously ill in Qatar, near Saudi Arabia. Doctors were unable to diagnose the cause of her illness with confidence, so she was flown to London and admitted to Hammersmith Hospital, where specialists help was available. She was then only semi-conscious and on the "Dangerously Ill" list. A team of doctors hurried to examine the baby only to discover that they too, were baffled by the very unusual symptoms. While they were discussing the baby's ease, a nurse asked to speak to them.
"Excuse me," said Nurse Marsha Maitland, "but I think the baby is suffering from thallium (铊) poisoning."
"What makes you think that？" Dr. Brown said. "Thallium poisoning is extremely rare."
"A few days ago, I was reading a novel called A Pale Horse by Agatha Christie," Nurse Maitland explained. "In this book, somebedy uses thallium poison, and all the symptoms are described. They're exactly the same as the baby's."
"You're very observant and you may be right," another doctor said. "We'll carry out some tests and find out whether it's thallium or not."
The tests showed that the baby had indeed been poisoned by thallium, a rare metallic substance used in making optical glass. Once they knew the cause of the illness, the doctors were able to give the baby the correct treatment. She soon recovered and was sent back to Qatar.
(23)
A．Economic reason.B．Business reason.C．Political reason.D．Religious reason.
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