Edmund Halley was an English scientist who lived over 200 years ago. He studied the observations of comets (彗星) which other scientists had made. The orbit of one particular comet was a very difficult mathematical problem. He could not figure it out. Neither could other scientists who dealt with such problems. However, Halley had a friend named Newton, who was a brilliant (有才华的) mathematician. Newton thought he had already worked out that problem, but he could not find the papers on which he had done it. He told Halley that the orbit of a comet had the shape of an ellipse (椭圆) .
Now Halley set to work. He figured out the orbits of some of the comets that had been observed by scientists. He made a surprising discovery. The comets that had appeared in the years 1531, 1607, and 1682 all had the same orbit. Yet their appearances had been 75 to 76 years apart (相隔).
This seemed very strange to Halley. The different comets followed the same orbit. The more Halley thought about it, the more he thought that there had not been three different comets, as people thought. He decided that they had simply seen the same comet three times. The comet had gone away and had come back again.
It was an astonishing idea! Halley felt certain enough to make a prediction of what would happen in the future. He decided that this comet would appear in the year 1758. There were 53 years to go before Halley’s prediction could be tested.
In 1758 the comet appeared in the sky. Halley did not see it, for he had died some years before. Ever since then that comet has been called Halley’s comet, in his honor.Edmund Halley figured out the orbit of ______.
| A．some different comets appearing several times |
| B．three different comets appearing three times |
| C．the same comet appearing at different times |
| D．several comets appearing at the same time |
Halley made his discovery______.
| A．by doing experiments |
| B．by means of his own careful observation |
| C．by using the work of other scientists |
| D．by chance |
Halley made a surprising, but correct prediction in the year ______.
| A．1707 | B．1706 | C．1705 | D．1704 |
This passage in general is about ______.
| A．Halley and other scientists |
| B．The orbit of a comet |
| C．Newton and Halley |
| D．Halley and his discovery |
According to the passage, which of the flowing is NOT true ?
| A．Halley figured out the orbit of the comet first. |
| B．Newton figured out the orbit of the comet. |
| C．Newton gave Halley some help. |
| D．Halley died before 1758. |
A friend of mine named Paul received an expensive car from his brother as a Christmas present．On Christmas Eve when Paul came out of his office，a street urchin (顽童) was walking around the shining car．“Is this your car，Paul？” he asked．Paul answered，“Yes，my brother gave it to me for Christmas.” The boy was surprised．“You mean your brother gave it to you and it did cost you nothing？Boy，I wish…” He hesitated．
Of course Paul knew what he was going to wish for．He was going to wish he had a brother like that. But what the boy said surprised Paul greatly. “I wish,” the boy went on，“that I could be a brother like that.” Paul looked at the boy in surprise, then he said again, “Would you like to take a ride in my car？”
“Oh yes，I'd love that．”
After a short ride，the boy turned and with his eyes shining，said，“Paul，would you mind driving in front of my house？”
Paul smiled a little．He thought he knew what the boy wanted．He wanted to show his neighbors that he could ride home in a big car. But Paul was wrong again. “Will you stop where those two steps are？” the boy asked．
He ran up to the steps. Then in a short while Paul heard him coming back, but he was not coming fast. He was carrying his little disabled brother. He sat him down on the step and pointed to the car.
“There she is, Buddy, just like I told you upstairs. His brother gave it to him for Christmas and it didn't cost him a cent. And some day I'm going to give you one just like it…then you can see for yourself all the nice things in the Christmas windows that I've been trying to tell you about.”
Paul got out and lifted the boy to the front seat of his car. The shining-eyed older brother climbed in beside him and the three of them began an unforgettable holiday ride. The street urchin was very surprised when ______．
| A．Paul received an expensive car |
| B．Paul told him about the car |
| C．he saw the shining car |
| D．he was walking around the car |
From the story we can see the urchin ______．
| A．wished to give his brother a car |
| B．wanted Paul’s brother to give him a car |
| C．wished he could have a brother like Paul's |
| D．wished Paul could be a brother like that |
The urchin asked Paul to stop his car in front of his house ______．
| A．to show his neighbour’s the big car |
| B．to show he had a rich friend |
| C．to let his brother ride in the car |
| D．to tell his brother about his wish |
We can infer from the story that ______．
| A．Paul couldn't understand the urchin |
| B．the urchin had a deep love for his brother |
| C．the urchin wished to have a rich brother |
| D．the urchin's wish came true in the end |
The best name of the story is ______．
| A．A Christmas Present | B．A Street Urchin |
| C．A Brother Like That | D．An Unforgettable Holiday Ride |
阅读下面短文，掌握其大意，从每题所给的 A、B、C、D四个选项中，选出最佳选项，并在答题上将该项涂黑。
On Thursday afternoon Mrs. Clarke locked the door and went to the women’s as usual. It was a pleasant way of passing time for an old woman who lived .
When she came home she sensed unusual. Had someone got in? The back door and the were all locked and there was no sign of forced entry (进入). Had anything been __ ? She went from room to room, checking, and found her camera and watch .
The following Thursday she went out at her time, but she didn’t go to the club. _ , she took a short walk in a park nearby and came home, herself in through the back door. She settled down to wait and see what would .
It was 4 o’clock when the front doorbell rang. Mrs. Clarke was making tea at the time. The bell rang again, and she heard her letter-box being pushed open. the kettle（壶）of boiling water, she moved quietly towards the door. A piece of wire appeared through the letter-box, and then a . The wire turned and caught around the knob (圆型旋钮) on the door-lock. Mrs. Clarke raised the kettle and the water over the hand. _ was heard outside as the fell to the floor and the hand was pulled back, which was by the sound of running feet.
It wasn’t long the police caught the thief. And Mrs. Clarke was greatly at the club for her successful .
A．party B．movement C．club D．organization
A．lonely B．alone C．away D．busily
A．everything B．nothing C．something D．anything
A．windows B．rooms C．doors D．gates
A．found B．opened C．taken D．broken
A．losing B．missing C．leaving D．disappearing
A．same B．spare C．special D．usual
A．Therefore B．However C．Instead D．Again
A．pushing B．letting C．pulling D．leading
A．appear B．follow C．happen D．continue
A．the next moment B．for a while C．in time D．at once
A．Putting down B．Laying aside C．Picking up D．Taking away
A．knife B．hand C．letter D．key
A．spread B．dropped C．poured D．covered
A．A sad voice B．A sharp cry C．A warning shout D．A strange noise
A．key B．kettle C．door-lock D．wire
A．followed B．caused C．produced D．ended
A．before B．since C．until D．when
A．surprised B．admired C．inspired D．supported
A．self-satisfaction B．self-protection C．self-respect D．self-service
People say that Vancouver is Canada’s most beautiful city, ______by mountains and the Pacific Ocean.
| A．surrounding | B．surrounded |
| C．being surrounded | D．is surrounded |
—Obviously, the boss looks happy again, doesn’t he?
—Yes. It’s said that he has ______ the difficult problem.
| A．succeeded in solve | B．tried to solve |
| C．managed to solve | D．been solved |
A concert will be held in our city _____ the great musician.
| A．in search of | B．in charge of |
| C．in memory of | D．in favour of |
We must do whatever we can _____ the river _____ any more.
| A．to keep; polluted | B．to prevent; being polluted |
| C．keep; polluted | D．prevent; being polluted |
People who want to cross Canada in less than five days forget the fact _____ Canada is 5,500 kilometers from coast to coast.
| A．whether | B．that | C．how | D．why |
As we all know, Asia is _____ Europe.
| A．four times as large as | B．bigger than four times |
| C．four times as much as | D．four times the size as |
_____ excited the whole nation most is _____ more than 100 workers who were trapped under the coal mine in north China have been rescued.
| A．It; that | B．That; whether |
| C．What; whether | D．What; that |
The little girl _____ on the sofa _____ to me that she had ______ the purse on the table.
| A．lying; lay; ;aid | B．lie; lied; laid |
| C．lying; lied; lay | D．lay; lied; lain |
If you keep on your research, you will succeed _____.
| A．at the same time | B．at no time |
| C．in time | D．on time |
Rather than _____ at home, he always prefers _____ sports on the open air.
| A．stay; have | B．staying; to have |
| C．to stay; having | D．stay; to have |
The poor child was ______ by his grandmother after his parents died.
| A．grew up | B．turned up |
| C．brought up | D．dressed up |
试题篮
()
粤公网安备 44130202000953号
