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A．levelB．positionC．rankingD．fares
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听力原文： In the past twenty years, scientists have learnt a great deal about sleep and dreams. They have discovered, for example, that sleep and dreams affect the way people feel. A good night sleep, generally, makes a person happier in the morning.
Dreams also have a strong effect on the moods of people. However, who appears in a dream is more important than what happens.
Every person has a special dream character. If the special character appears in dreams, people are happier after sleeping. If there are many people in ones dreams, this has a good effect. A person will wake up happier.
The moods of people affect their performance throughout the day. The level of ones moods rises and falls during the day. The less sleepy the people are, the better they perform, and usually they are more friendly, more aggressive, and more clear thinking.
Some day scientists hope to manipulate sleep in order to control the way people feel and perform.
What is the main topic of the passage？
As it is used in the last sentence of Paragraph 1 , the pronoun "they" refers to______.
Hemingway was born in Illinois, his family took him as a boy on frequent hunting and fishing trips and so acquainted him early with the kinds of virtues (美德) such as courage and endurance, which were later reflected in his fiction (文学作品) . After high school, he worked as a newspaper reporter and then went oversea to take part in World War I. After the war he lived for several years in Paris, where he became part of a group of Americans who felt strange from their country. They considered themselves a lost generation. It was not long before he began to publish the powerful novel "The Sun Also Rises". His subjects were often war and its effects on people, or contests, such as hunting or bullfighting, which demand stamina and courage.
Hemingway's style. of writing is striking. His sentences are short, his words simple, yet they are often filled with emotion. A careful reading can show us, furthermore, that he is a master of the pause. That is, if we look closely, we see how the action of his stories continues during the silences, during the times his characters say nothing. This action is often full of meaning. There are times when the most powerful effect comes from restraint (适度). Such times occur often in Hemingway's fiction. He perfected the art of expressing emotion with few words.
The word "stamina" in the last line of paragraph 1 can most probably be replaced by______.
I keep telling myself to avoid______ the same mistakes in pronunciation.
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