【单选题】
纯电容元件在电路中___电能。(单选题)
A. 储存
B. 分配
C. 消耗
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答案
A
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旋转磁场的旋转方向决定于通入定子绕组中的三相交流电源的相序，只要任意调换电动机___所接交流电源的相序，旋转磁场既反转。(单选题)
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在生产过程中，静电对人体，对设备，对产品都是有害的，要消除或减弱静电，可使用喷雾增湿剂，这样做的目的是___。(单选题)
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Q1: Why was the girl excited?___
A. She is going to have a lot of vanilla ice cream .
B. She won the spelling competition at her school .
C. She is going to the state capital for a competition .
D. She "excellence"correctly,but others didn't .
【单选题】
Q2: What happened when the man was 13 years old?___
A. His family moved to Sacramento to settle down .
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【单选题】
Q3: Why did the man’s mom give him a big hug?___
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Q4: What color is the girl going to wear for her next competition?___
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Q1: What is this passage mainly about?___
A. Superstitions and science .
B. Tips on how to have good luck .
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Q2: According to the passage, what is considered as bad luck?___
A. Walking under a ladder .
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Q3: Why is it considered bad luck to see a black cat crossing one’s path?___
A. Because black cats look like witches . e witches .
B. Because black cats were thought to be witches .
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Q4: According to the passage, what will bring people good luck?___
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Q2: When does the woman arrive back home by subway?___
A. At 8 .
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【单选题】
Q3: According to the woman, in what way will the new high-speed train be a big help to her?___
A. She can either read or rest a little on the train .
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【单选题】
Q4: How will the new high-speed train affect the man?___
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Q1: How much time on average do Americans spend on their way to work?___
A. About an hour .
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【单选题】
Q2: What is the present situation about Americans’ commuting to work?___
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【单选题】
Q3: Why does Steven choose to have an extreme commute?___
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Q4: Which of the following is the disadvantage of long commutes?___
A. Traffic jams .
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Q1: What did Katy like about Jason’s last Halloween party?___
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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?___
A. Go to Jason's party .
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【单选题】
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【单选题】
Q2: Why did some stores open at midnight on Thanksgiving night?___
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【单选题】
Q3: How many Black Friday shoppers were reported to go to the shops at midnight this year?___
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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?___
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Q3: What does the speaker say about negative feelings?___
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【单选题】
Q4: What is the main idea of the passage?___
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【单选题】
Q2: What can we learn about Christopher?___
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Q3: What does the woman think about Christopher taking the trip to Alaska?___
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【单选题】
Q4: Which of the following is NOT mentioned as something that would have saved Christopher’s life?___
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D.
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【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 .
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【单选题】
Q3: What are skiers advised to do to avoid being caught in an avalanche?___
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【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 .
