【判断题】
心电记录纸上水平方向上一小格代表 0.04 秒的时间,而竖直方向上一小格代表 0.1mV 的电压。
A. 对
B. 错
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脑电图机中的平均导联只使用头皮上的两个作用电极而不使用参考电极,记录的波形是两个电极部位脑部变化的电位差值。
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Q4: According to the passage, what will bring people good luck?___
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C. Finding a on the ground and picking it up .
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【单选题】
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【单选题】
Q2: What is the actual reason that Katy doesn’t want to attend Jason’s party?___
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【单选题】
Q3: What is special about Linda’s party?___
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【单选题】
Q4: What will Katy do to solve her problem?___
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【单选题】
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【单选题】
Q3: How many Black Friday shoppers were reported to go to the shops at midnight this year?___
A. 24 percent .
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【单选题】
Q4: What can we learn about the 15-year-old Jenny?___
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【单选题】
Q2: When did the man first do a triathlon?___
A. Last year .
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【单选题】
Q3: How does the man feel about running?___
A. Boring.
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C. Exciting .
D. Interesting .
【单选题】
Q4: Why doesn’t the woman like swimming in the triathlon?___
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D. Because she doesn't like swimming with  many people .
【单选题】
Q1: What is the ratio of positive to negative emotions that can make a person happier?___
A. 1:3.
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【单选题】
Q2: What is the most exciting finding about increasing positive emotions?___
A. It improves relationships .
B. It leads to greater success .
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D. It contributes to good health .
【单选题】
Q3: What does the speaker say about negative feelings?___
A. People should turn every negative feeling  around .
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【单选题】
Q4: What is the main idea of the passage?___
A. People should learn to manage their  emotions .
B. People should be patient with their  negative feelings .
C. People should learn to analyze causes of  unhappiness .
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【单选题】
Q1: What are the man and woman talking about?___
A. Whether nature is magical and kind .
B. Whether nature is powerful and full of risks .
C. Whether Christopher was well prepared for the trip .
D. Whether Christopher's trip to Alaska was  worthwhile .
【单选题】
Q2: What can we learn about Christopher?___
A. He made a film about his trip to Alaska .
B. He wrote a story about his trip to Alaska .
C. He died while having an adventure in Alaska .
D. He learned how powerful and risky Alaska was .
【单选题】
Q3: What does the woman think about Christopher taking the trip to Alaska?___
A. He was too foolish .
B. He was really romantic .
C. He had a very kind heart .
D. He had a spirit for trying things .
【单选题】
Q4: Which of the following is NOT mentioned as something that would have saved Christopher’s life?___
A. A gun to hunt .
B. The map of the area .
C. Emergency food supplies .
D.
E. mergency communication equipment .
【单选题】
Q1: What speed can an avalanche reach within five seconds of taking off?___
A. At 8 miles an hour .
B. At 18 miles an hour .
C. At 80 miles an hour .
D. At 88 miles an hour .
【单选题】
Q2: According to the passage, under what circumstances may an avalanche occur?___
A. There are too many layers of snow on the  .
B. There is a layer of snow covering an entire  area .
C. The top layer of snow slides off the layer  below it .
D. The layer of snow below the surface  becomes unstable .
【单选题】
Q3: What are skiers advised to do to avoid being caught in an avalanche?___
A. Ski only in the official ski areas .
B. Look for solid snow to walk on .
C. Look out for each other while skiing .
D. Learn to control themselves in an  avalanche .
【单选题】
Q4: Why does the ski patrol use explosives?___
A. To dig holes in the snow .
B. To close the area for skiing .
C. To make an avalanche move on purpose .
D. To' check how different layers are holding  up .
【单选题】
Q1:What is conversation mainly about?___
A. The woman's happy college life the  man's doubt .
B. The woman's spending habits and the  man's concerns .
C. The man's reminding the woman of the  exam this Thursday .
D. The man's support for the woman over the  past 15 years .
【单选题】
Q2:What did the woman do last night?___
A. She bought a new leather coat .
B. She studied very hard for an exam .
C. She treated all her friends to dinner .
D. She went to a concert with her friends .
【单选题】
Q3:Where did the woman get the money?___
A. She just received her student loan .
B. She saved some money for herself .
C. She borrowed the money from her friends .
D. She asked her mom to send her the money .
【单选题】
Q4:What is the man?___
A. A teacher of biology .
B. An undergraduate student .
C. A freshman in biology class .
D. A graduate teaching assistant .
【单选题】
Q1: What is this passage mainly about?___
A. How businesses can compete with each  other .
B. How small businesses operate during  holidays .
C. How small businesses manage holiday  workers .
D. How can earn more money  during holidays .
【单选题】
Q2: According to Rubin, what can small companies do to thank holiday workers?___
A. Have talks with their families .
B. Give them good extra benefits .
C. Offer them expensive holiday tokens .
D. Show appreciation to them face to face .
【单选题】
Q3: What can small business owners do to help holiday workers get into the holiday spirit?___
A. Entertain them with big meals .
B. Let them enjoy some holiday games .
C. Give them handmade thank-you cards .
D. Send their families some holiday gift cards .