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How many dollars does the woman have to pay for the metal shelf？
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Generations of Americans have been brought【C1】______to believe that a good breakfast is important for health. Eating breakfast at the【C2】______of the day, we have all been【C3】______, is as necessary as putting gasoline in the family car【C4】______starting a trip.
But for many people the thought of food first in kite morning is by【C5】______pleasure. So【C6】______all the efforts, they still take no【C7】______Between 1978 and 1983, the latest year for which figures are【C8】______, the number of people who didn't have breakfast increased【C9】______33 percent—from 8.8 million to 11.7 million【C10】______the Chinese-based Market Research Corporation of America.
For those who feel pain of【C11】______about not having breakfast,【C12】______there is some good news. Several studies in the last few years【C13】______that, for adults especially, there may be nothing【C14】______with omitting breakfast. "Going【C15】______breakfast does not affect【C16】______," said Arnold E. Bendoer, former professor of nutrition at Queen Elizabeth College in London,【C17】______does giving people breakfast improve performance..
【C18】______evidence relating breakfast to better health or【C19】______performance is surprisingly inadequate, and most of the recent work involves children, not【C20】______. "The literature," says one researcher, Dr. Ernesto Pollitt at the University of Texas, "is poor."
【C1】
听力原文：M: Hi, Catherine. Haven't seen you for a long time. How is your vocation？
W: Terrific ! I went to Washington D. C. to visit my cousin. I saw the Jefferson Memorial, the Lincoln Memorial, and the White House.
M: What a pity is that I've never been there. What do you like best？
W: No doubt the White House. It's been the official home of the American presidents since 1800.
M: I didn't know the history of it. Is it really as nice as everyone says it is？
W: It's a two - story building built of stones. But it is simple and dignified. It was named the White House after the British burned it in the war of 1812.
M: I remember now. The president then was James Madison. And his wife Dolly ran out of the burning building carrying the portrait of George Washington.
W: That's right, it's hanging in the East Room now.
M: How big is the White House？
W: There are one hundred thirty - two rooms inside it and covers eighteen acres of land outside. It has to be painted every four years.
M: How much are the visitors allowed to visit？
W: Only six rooms are open to the public. It's a popular, and there are always too many people waiting for their turns.
When was the White House built？
Where might the two speakers be in this dialogue？
听力原文：Mr. Green: Do you live in the city, Mr. Anderson？
Mr. Anderson: No, I am also new here. I came here for traveling.
Mr. Green: How long have you been here？ Do you come here on business trip or just for tourism？
Mr. Anderson: I've been here for about five or six days. I'm here just for a paid vocation.
Mr. Green: Where do you come from, Mr. Anderson？
Mr. Anderson: I come from New York. I suppose everyone in the world must know this place.
Mr. Green: I think so. It's a wonderful city. All people long to go there for a visit. Do you live in the center of the city？
Mr. Anderson: I live at 2035 Washington Street. Do you know it？
Mr. Green: Sorry, I don't know. I've never been there. By the way, it seems that you know spree German. How long have you spoken this language？
Mr. Anderson: How long？ I've spoken German all my life! You see, my grandfather is a German. He began teaching me German when I was very small.
Mr. Green: Oh, that's great. A language is a very useful weapon in our daily life. Many people nowadays seem to speak more than two languages.
Why does Mr. Anderson come here？
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