above/ over/ on 这三个介词都表示“在--之上 .但含义不同.on指在某物的表面上.和某物接触,above指在某物的上方.不和某物接触.但也不一定在某物的正上方,over指在某物的——青夏教育精英家教网—

摘要： above/ over/ on 这三个介词都表示“在--之上 .但含义不同.on指在某物的表面上.和某物接触,above指在某物的上方.不和某物接触.但也不一定在某物的正上方,over指在某物的正上方.不和某物接触.试比较: There is a book on the desk.课桌上有一本书. I raise my right hand above my head. 我把右手高举过头. There is a stone bridge over the river. 河面上有座石桥.

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Hans Bethe

The late German-American physicist Hans Bethe once described himself as “the H-bomb’s midwife（接生婆）”. He left Nazi Germany in 1933, after which he helped develop the first atomic bomb（原子弹）, won the Nobel Prize in Physics in 1967 for his contribution to the theory of nuclear reactions（核反应）and advised controls over nuclear weapons（武器）for the peaceful use of the nuclear energy.

Francis Crick

The late Francis Crick, one of Britain’s most famous scientists, won the Nobel Prize in Physiology（生理学）or Medicine in 1962. He is best known for his discovery with James Watson and Maurice Wilkins, the double helix structure（双螺旋结构）of the DNA, though he also made important contributions in other fields. He died in 2004.

Peter Hall

Sir Peter Hall’s life in the theatre has seen him running the Arts Theatre, founding the Royal Shakespeare Company when he was only 29, and directing the National Theatre. He also directed Akenfielf for London Weekend Television and runs the Peter Hall Company, which has 40 productions worldwide to its name.

【小题 1】The above information is about _________.

A. famous physicists B. great people

C. great directors D. Nobel Prize winners

【小题 2】 Francis Crick won the Nobel Prize before ________ years of his death.

A. 32 B. 24 C. 42 D. 45

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Some time ago, my wife and I traveled to visit my sister. We had taken more clothes than we needed and struggled onto the train. In front of us, in a face-to-face seat, 16 six young men in their early 20s. They were strong and 17 , and I disliked them immediately. They were laughing loudly, obviously 18 themselves and they 19 a foreign language.

As we went quickly 20 the countryside, I kept an eye on them as they joked around. Sometimes they took a look in our direction. When two of them go out 21 , relaxed a little. The rest of them 22 to laugh and joke in their own language.

When we finally arrived at our 23 , only one of them was left on the train. He was obviously 24 too and as I struggled towards him with my heavy luggage(行李)，he reached out and asked in English “Want a hand wth that, mate?”

He 25 the heavier bag up the station steps for us. We were pleasantly surprised and very grateful.

1.A. sat B. stood C. lay D. lived

2.A. polite B. quiet C. lazy D. noisy

3.A. helping B. enjoying C. teaching D. devoting

4.A. told B. spoke C. said D. talked

5.A. above B. onto C. over D. through

6.A. off B. up C. along D. on

7.A. wanted B. started C. stopped D. continued

8.A. house B. hotel C. station D. shelter

9.A. bored B. worried C. excited D. frightened

10.A. carried B. left C. brought D. bought

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Every object has weight. But the center of its weight is not always in the middle of the object. If the top of an object is heavier than its bottom, it will fall over easily. We say that its center of gravity is high. But if the bottom is heavier, it won’t fall easily. Then we say that its center of gravity is low.
Look at the first picture. This empty box must fall over, because its center of gravity (C) is not above the line of its bottom (AB).
Now look at the second picture. There is some heavy iron in the bottom of this box. It will not fall, because its center of gravity is above its bottom.

【小题1】If the bottom of an object is ______ its top, it will fall over easily.