内容正文:
◆[StepⅠ Prereading]
What do you know about astronomy(天文学) and space?
答案:Various.
◆[StepⅡ Whilereading]
Scan the text and answer the following questions.
1.What is the main idea of the passage?
A.Human beings have made great achievements in space exploration.
B.Human beings have a long history of exploring space.
C.Human beings have invented rockets to explore space.
D.Human beings are determined to find another planet suitable for life.
答案:A
2.Match the main idea with each paragraph.
Para.1 A.Human beings made achievements before the midcentury.
Para.2 B.Space exploration will surely face a bright future.
Para.3 C.China has made rapid progress in space exploration.
Para.4 D.People desire to know about space.
Para.5 E.Despite dangers,people never stopped the step of exploring space.
答案:Para.1-D;Para.2-A;Para.3-E;
Para.4-C;Para.5-B
◆[StepⅢ Carefulreading]
Read the text and find out which is True(T) or False(F).
1.Yuri Gagarin first went onto the moon.( )
答案:F
2.Owing to risks,human beings once stopped space exploration.( )
答案:F
3.Humans plan to explore other planets.( )
答案:T
4.The Sputnik Ⅰ rocket successfully orbited around Earth.( )
答案:F
5.Neil Armstrong stepped on the moon on 20 July 1969.( )
答案:T
6.China has successfully sent humans into space.( )
答案:T
◆[StepⅣ Postreading]
Fill in the blanks according to the text.
Human beings have been ____1____ space hoping to find more about the ____2____ .However,that is both ____3____ and challenging.Scientists,in spite of great difficulties,help people realize the dream to go into ____4____ . ____5____ have been made which can escape the earth ____6____ and on October,1957,the first satellite was ____7____ by the USSK.Although scientists tried hard to make sure nothing would go wrong, ____8____ still happened.These disasters have caused great losses and ____9____ of astronauts.But the desire to explore space will never fade.Space exploration will experience a bright ____10____ .
答案:1.exploring 2.universe 3.dangerous
4.space 5.Rockets 6.gravity 7.launched
8.accidents 9.deaths 10.future
Ⅰ.阅读理解
A
Some new comets(彗星) have been discovered accidentally by amateur(业余的) astronomers. Surprisingly a few bright comets have been discovered with the naked eye (肉眼) by members of the general public. However, a great number of comets are found by comet hunters carrying out telescope searches of chosen areas of the night sky.
As the movement of all comets is directed around the Sun and because these bodies brighten as they move towards the Sun, there is a greater possibility for the discovery of a new comet in the skies towards the Sun rather than away from the Sun's direction. This means that searches should be put on the western sky after evening light and on the eastern sky before morning light.
From the astronomical point there is no time during the year which is the best for the discovery of new comets. A search can be done at any time providing there is no bright Moon.
Studies done on the discovery conditions of comets discovered before show that more comets have been discovered in the morning sky than in the evening sky. Thus the smart comet hunter should make sure that morning activity receives as much if not more attention than any evening effort.
In recent times, the use of advanced CCD technology to discover objects close to the Earth will in the future greatly reduce the chances of new comets being found with small telescopes. An example of the new technology is the very successful LINEAR program operating in New Mexico. However, until a similar system is based in the southern half of the Earth there will continue to be chances for the discovery of new comets which come from the south.
[语篇解读] 本文是说明文。文章介绍了观测彗星的要领。
1.What are comet hunters advised to do?
A.Look away from the Sun.
B.Stay where there's bright light.
C.Face the western sky in the daytime.
D.Turn to the east in the early morning.
解析:D [细节理解题。由第二段中的“This means that searches should be put on the western sky after evening light and on the eastern sky before morning light.”可知,早晨太阳出来之前应观测东面的天空。]
2.What do we know about the time for the discovery of new comets?
A.Days when they're close to the Earth are great chances.
B.Certain fixed days are best for watching comets.
C.Every day is the same if there's no bright Moon.
D.Days with the Moon should never be missed.
解析:C [细节理解题。由第三段中的“A search can be done at any time providing there is no bright Moon.”可知,只要没有月亮,每一天对彗星猎人来说都一样可以观测。]
3. Which of the following is a smart idea for comet hunters?
A.Paying more attention in the morning than in the afternoon.
B.Being equally serious both in the morning and afternoon.
C.Being more relaxed in the morning than in the afternoon.
D.Forming a habit of working only in the morning.
解析:B [推理判断题。由第四段中的“Thus the smart comet hunter should make sure that morning activity receives as much if not more attention than any evening effort.”可知,早晚观测彗星应该投入一样的精力。]
4.What can be inferred about the CCD technology?
A.It's similar to a telescope.
B.It'll disappoint comet hunters.
C.It's spreading all over the world.
D.It'll make comet hunters feel lucky.
解析:B [推理判断题。由最后一段中的“the use of advanced CCD technology...greatly reduce the chances of new comets being found with small telescopes”可知,这种技术降低了追星猎人发现新的彗星的概率,因此他们应该会感到有些失望。]
B
Edmund Halley was an English scientist who lived over 200 years ago. He studied the observations of comets which other scientists had made. The orbit of one particular comet was a very difficult mathematical (数学上的) 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 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 (解决;计算出) 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.
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 (预言) of what comet 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 has died some years before. Ever since then that comet has been called Halley's comet,in his honor.
[语篇解读] 本文主要介绍了200多年前英国科学家哈雷以及他的发现。
5.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
解析:C [细节理解题。由文中第三段“He figured out(解决;计算出) the orbits of some of the comets that had been observed by scientists.”可知应选C。]
6.Halley made a surprising, but correct prediction in the year ________ .
A.1704 B.1705 C.1706 D.1707
解析:B [数字计算题。由最后一段中的“He decided that this comet would appear in the year 1758.There were 53 years to go before Halley's prediction could be tested.”可知,他预言彗星出现的时间是1758年,而这个预言还要经过53年才能验证,由此可以推断出哈雷做出这个预言的时间是1705年。]
7.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
解析:D [主旨大意题。本文主要介绍了哈雷以及他的发现。]
8.Which of the following is TRUE?
A.Edmund Halley was an American scientist.
B.Halley made his discovery by doing experiments.
C.Newton was a famous mathematician.
D.The orbit of a comet had the shape of a circle.
解析:C [细节理解题。从文章首句可以看出A项错误;从第三段的分析中可知B项也错误;由第二段可知,牛顿告诉哈雷彗星的轨道是椭圆形的,可排除D项。]
Ⅱ.语法填空
Visiting Xi'an was once my dream. It became a reality when I was admitted to a training course in China along with two other ____1____ (lady). Finally, the day arrived ____2____ I landed at Xianyang International Airport in early August. As soon as I landed, I ____3____ (feel) a change in the atmosphere. I saw people standing in queues ____4____ (wait) for their turn at the immigration desk. Afterwards, we were transported to the office in the International Exhibition Center. China had invited participants ____5____ twentythree developing countries to share digital television broadcasting techniques with them.
In my 20 days in Xi'an, I got the opportunity to observe Chinese culture closely, ____6____ it made a strong impression on me. Now, Xi'an is like my second home. Since I came back to Pakistan, I have been missing Xi'an ____7____ (bad).
My 20day stay in Xi'an was ____8____ great experience. It was a learning opportunity, and also a chance to ____9____ (broad) my understanding of diversity. I learned that despite differences of colors, heights, races and religions, all human beings ____10____ (tie) by the bond of humanity, and that the future of nations is global with development and peace.
答案:1.ladies 2.when 3.felt 4.waiting
5.from 6.and 7.badly 8.a 9.broaden 10.are tied
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