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W: Oh she didn't. It's just that she caught a really bad cold a couple of days ago.
Q: What can be inferred from the conversation？
(17)
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听力原文： A study recently concluded that the public in industrialized nations are becoming more interested than before in helping the less fortunate people of developing nations. This newfound selflessness has not resulted in personal giving of money, but rather in individual efforts to give aid through service— which is far more important than money. Most volunteers have been professionals. Doctors and nurses have volunteered for medical duty, engineers for building roads and bridges, and teachers and others have made themselves available for a variety of international assignments.
It is not clear why this phenomenon is taking place. There has been consideration that international developments in recent years have weakened nationalism and have emphasized importance of all humanity working together for a better world.
(36)
建筑工程公司承包工程提供的自产货物应缴纳的增值税()万元。
听力原文：W: I really wish our son would take more interest in our business. I don't know why he wants to be- come an architect.
M: But. Sarah, he's only sixteen. I think he should do what he wants.
Q: What does the man want his son to do？
(13)
听力原文： In the United States almost everyone chews gum, and more than $140 million worth of chewing gum is sold each year. This means that, on the average, each person in the United States spends one dollar a year for chewing gum.
Chewing gum became popular in the United States mainly because of one man, William Wrigley, who was head of the Wrigley Company for many years.
In 1870 Thomas Adams began to experiment with chewing gum. It was he who first made gum soft and pleasant enough to chew. But it was not until Wrigley entered the business in about 1890 that people everywhere began to learn about chewing gum and to use it widely.
Wrigley enjoyed doing things in a big way. In his first year he borrowed money and spent more than a million dollars on advertising. On every streetcar in the United States, for years and years, there was a large advertisement telling all about Wrigley's chewing gum. People complained that wherever they went they would see the name of Wrigley. Several times Wrigley sent free-of-charge pieces of gum to every person in the telephone book of every city and town in the United States. Finally, he began to advertise that it was good for the health to chew gum. His painstaking work in advertising finally brought him huge profits.
Who was the inventor of chewing gum？
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