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【简答题】
阅读理解。 In foreign (外国的) countries, some people do not like the number 13. They don't think 13 is a lucky number. For example, they don't like to live on the thirtieth floor. My friend Jack has got the same idea. He doesn't like the number 13, either. One day he asked some friends to dinner. When all of his friends arrived, he asked them to sit around the table. He began to count (数) the people in his mind when they were having the delicious food. Suddenly (突然) he cried out. 'Oh, there are thirteen people here!' Everybody's face turned white except (除……以外) Mr. Brown. He said slowly with a smile on his face, 'Don't worry, my dear friends! We have fourteen people here. My wife Mrs. Brown will have a baby in a few weeks. She is in the family way (怀孕) now.' All of them became happy again. 'Congratulations!' they said to Mr. and Mrs. Brown. They enjoyed the nice food and had a good time that evening. 1. Some people in don't like number 13 because they think number 13 _____. A. is a lucky number B. is an unlucky number C. can bring them happy D. can make them ill 2. One day Jack asked _____ persons to his home to have dinner. A. 11 B. 12 C. 13 D. 14 3. Suddenly Jack cried out because he found there were _____ people there. A. 11 B. 12 C. 13 D. 14 4. Mrs. Brown will be _____ ina few weeks. A. a mother B. the thirteenth person C. Mr. Brown's wife D. Jack's friend 5. Which of the following is NOT right? A. When Jack cried out, everyone was afraid(害怕)except Mr. Brown. B. In fact, there were fourteen people in Jack's home. C. All of them became happy again when they heard Mr. Brown's words. D. Many people don't like the number 13, but me friend Jack does.
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【简答题】弯曲液面内外附加压强△ P= 。肥皂泡内外的压强差△ P'= 。
【单选题】弯曲液面的附加压强方向为
A.
指向液体内部
B.
指向液体外部
C.
沿液体表面方向
D.
指向弯曲液面的曲率中心
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【单选题】. . — You look troubled. — The director asked me to finish this task by Sunday. How can I ________ to?
A.
attempt
B.
manage
C.
decide
D.
happen
【单选题】弯曲液面内外附加压强为
A.
4a/R
B.
2a/R
C.
a/4R
D.
a/2R
【单选题】Task 2 Directions: This task is the same as Task 1. The 5 questions or unfinished statements are numbered 41 through 45. Ask three people to look out the same window at a busy street comer and tell yo...
A.
they will give three different answers
B.
they will see three different scenes
C.
they cannot see clearly
D.
they can only see the busy traffic
【判断题】弯曲液面的附加压强定义是液内压强减去液外压强,其中凸液面附加压强为正,凹液面附加压强为负。
A.
正确
B.
错误
【单选题】弯曲液面的附加压强方向
A.
指向弯曲液面的曲率中心
B.
指向液面外侧
C.
指向液面内侧
D.
无法确定方向
【单选题】弯曲液面的附加压强方向是
A.
一定指向液体内部;
B.
一定指向液体外部;
C.
一定沿液体的表面;
D.
一定指向曲率中心
【简答题】Task 1 Look at the movie poster and guess its movie type.
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