题目内容

Venus(金星) has a dense atmosphere, ______ we know very little.

    A. its composition                             B. about whose composition

 C. about which composition                          D. whose composition

B

练习册系列答案
相关题目

阅读理解

　　The journey to the moon has been the first step towards exploration(探险)in space．The distance between the Moon and Earth is very short indeed when compared with the distances between Earth and the other planes．Mars, the nearest planet to Earth is millions of miles away!Travelling to the planets will be man’s next aim．Such travels will be more challengingthan the trip to the moon and certainly more adventurous．

　　Recently, two American spaceships, Vikings 1 and 2, landed on Mars trying to discover whether that planet has any life on it．So far the signs of life on Mars has neither confirmed nor ruled out．Russians have discovered that the surface of Venus(金星)is so hot that it is almost certain that there is no life there．Also the atmosphere of Venus is extremely dense(稠)and the pressure is nearly a hundred times greater than that of the Earth’s atmosphere．

　　Scientists believe man may find planets which have the same conditions as those we have on Earth, but man should realize Earth will be his only home for a long time and begin to love and care for it．

　　宇宙飞行多么令人向往。宇宙的奥秘常给我们带来无限的遐想。我们能找到和地球一样的星球吗？我们能到地球以外的星球上做客吗？科学家们的回答是肯定的。

(1)

According to the passage, traveling to the planets will be ________．

[　　]

A．

much easier and even more interesting

B．

far more exciting and dangerous

C．

man’s final aim

D．

man’s first step

(2)

Which of the following is NOT true?

[　　]

A．

Mars is nearer to the earth than the moon．

B．

The moon is much nearer to the earth than Mars．

C．

Of all the planets, Mars is the nearest to the earth．

D．

All the planets are much farther to the earth．

(3)

From the passage, we can guess ________．

[　　]

A．

there is life on Mars

B．

there is no life on Mars

C．

the atmosphere of Mars is not so dense as that of Venus

D．

scientists will have little hope to find the life on Mars

(4)

Man can live on under the condition of ________．

[　　]

A．

much too hot surface

B．

the same pressure as we get on earth

C．

normal atmosphere as we have on earth

D．

Both B and C．

(5)

Scientists think we should take care of our earth because ________．

[　　]

A．

no other planets are to take the place of the earth

B．

everything needed is provided by the earth

C．

the only home of man will be the earth for a long time

D．

the dream to find another home for man will come true

IS THERE LIFE ON EARTH?

There was great excitement on the planet of Venus(金星) this week. For the first time Venusian scientists managed to land a satellite on the planet Earth, and it has been sending back signals as well as photographs ever since.?

The satellite was directed into an area known as Manhattan (named after the great Venusian astronomer Prof. Manhattan, who first discovered it with his telescope 20 000 light years ago).Because of excellent weather conditions and extremely strong signals, Venusian scientists were able to get valuable information as to feasibility(可行性) of a manned flying saucer(飞碟) landing on Earth.A press conference was held at the Venus Institute of Technology.?

“We have come to the conclusion,based on last week's satellite landing,” Pro. Zog said,“that there is no life on the Earth.”?

“How do you know this?” the science reporter of the Venus Evening Star asked. ?

“For one thing, Earth's surface in the area of Manhattan is composed of solid concrete(混凝土)and nothing can grow there. For another, the atmosphere is filled with carbon monoxide(一氧化碳) and other deadly gases and nobody could possibly breathe this air and survive.”?

“What does this mean as far as our flying saucer program is concerned?”?

“We shall have to take our own oxygen with us, which means a much heavier flying saucer than we originally planned. ”

“Are there any other hazards that you discovered in your studies?”?

“Take a look at this photo. You see this dark cloud floating over the surface of Earth? We call this the Consolidated Edison Belt. We don't know what it is made of, but it could give us a lot of trouble and we shall have to make further tests before we send a Venus Being there.”?

“If what you say is true, won't this set back the flying saucer program several years?”?

“Yes, but we shall proceed as soon as the Grubstart gives us the added funds.”?

“Prof. Zog, why are we spending billions and billions of zilches to land a flying saucer on Earth when there is no life there?”?

“Because if we Venusians can learn to breathe in an Earth atmosphere, then we can live anywhere.”

During the week of great excitement the Venusian scientists succeeded in getting important information on whether they can_______.

A. land a satellite with Venus astronauts on Earth

B. make a first?rate flying saucer?

C. get a Earth Being to Venus

D. direct a flying saucer into Manhattan?

According to Prof.Zog,the Venusians will have to take their own oxygen with them when they carry out their flying saucer program because_______.?

A. they need it on their way to the planet of Earth?

B. the Earth's atmosphere is filled with deadly gases?

C. oxygen is far from enough in the area of Manhattan where the saucer is to land?

D. there is no air on the planet of Earth?

The “dark black cloud” on the photograph refers to_______.?

A. the polluted air floating over the surface of Earth?

B. the mass of tiny drops of water floating above Earth?

C. the things that are unknown to everybody?

D. the dark clouds gathering before a storm breaks?

The author wishes to call our attention to the fact_______.?

A. that modern man has polluted his environment to such an extent that he might destroy himself if he went on like this?

B. that there is no point in spending billions and billions of zilches to land a flying saucer on Earth?

C. that pollution has become so serious a problem on Earth that even Venusians find life there unbearable?

D. that it is difficult, if not altogether impossible, to land a manned flying saucer on Earth

For thousands of millions of years the moon has been going round the earth. At that time, the moon was the 　36 satellite(卫星)of the earth. Today, 　37 , the earth has many other satellites. All of them are 38 by man. These man-made satellites are very much smaller than the moon. However, some of them will still be going 39 the earth thousands of years from now.

Man-made satellites don’t 40 because they are going too fast to do so. As they speed along, they 41 to go straight off into space. They 42 out of the earth, or its gravity, which 43 them from doing this. As a result, they travel in an orbit(轨道)round the earth.

If a man-made satellite travels about at a certain height, it can keep going 44 round the earth, just like the moon. This is 45 it is above the atmosphere(大气), and there is nothing to 46 it down. If it travels 47 than that, it will be slowed down so much that it will 48 the earth.

Men have 49 spaceships to the moon and to the two 50 planets Mars(火星) and Venus(金星). By putting a camera on 51 the spaceship to the moon, men have been able to 52 photographs of the other side of the moon. This side is always 53 from us as the moon 54 the earth. The 55 were later transmitted by radio to the earth. They showed that the other side of the moon is very much the same as the side that turns towards us.

36. A. first　　　　　　 B. second　　　　　　　　　C. last　　　　　　　　　　 D. only

37. A. then　　　　　　B. however　　　　　 　 C. though　　　　　　　　 D. so

38. A. found　　　　　B. discovered　　　　　　C. made　　　　　　　　　 D. sent

39. A. with　　　　　 B. round　　　　　　　　　 C. behind　　　　　　　　 D. after

40. A. fall　　　　　　 B. rise　　　　　　　　　　　　C. break　　　　　　　　 D. stop

41. A. want　　　　 B. wish　　　　　　　　　 C. hope　　　　　　　　　 D. tend

42. A. pull　　　　　 B. push　　　　　　　　　　 C. take　　　　　　　　　　 D. launch

43. A. protects　　B. keeps　　　　　　　　　　C. makes　　　　　　　　 D. discourages

44. A. in and in　 B. on and on　　　　　　 C. out and out　　　　　D. up and up

45. A. because　 B. why　　　　　　　　　　　 C. whether　　　　　　　 D. when

46. A. hand　　　　 B. force　　　　　　　　　 C. slow　　　　　　　　　　 D. bring

47. A. higher　　　 B. longer　　　　　　　　　　 C. more　　　　　　　　　 D. lower

48. A. leave away　　　　　 B. fall to　　 C. go after　　　　　　　　 D. knock over

49. A. gave　　　　 B. offered　　　　　　　　　　C. sent　　　　　　　　　 D. drove

50. A. nearest　　 B. smallest　　　　　　　　　C. biggest　　　　　　 D. closest

51. A. board　　　 B. right　　　　　　　　　　 C. left　　　　　　　　　　 D. top

52. A. form　　　　 B. film　　　　　　　　　　　　C. catch　　　　　　　 D. take

53. A. far　　　　　　　B. hidden　　　　　　　　　C. different　　　　　　 D. separated

54. A. leads　　　　　 B. obeys　　　　　　　　　 C. circles　　　　　　　 D. pursues

55. A. information　 B. letters　　　　　　　　　C. sounds　　　　　　 D. photos

根据短文内容，从下框A~F选项中选出能概括每段主题的最佳选项，并在答题卡上将该选项涂黑。选项中有一项为多余项。

A．How do we get the names for the days?

B．The origin of division of the times.

C．How did men invent the week?

D．The Jews names the seven days.

E．How did the Egyptians and the Romans name the days?

F．Reason for no names of the days.

1._____________

Do you know how the days of the week get their names? There was a time in the early history of man when the days had no names! The reason was quite simple：men had not invented the week.

2. _____________

In those days, the only division of times was the month, and there were too many days in the month for each of them to have a separate name. But when men began to build cities, they wanted to have a special day on which to trade, a market day. Sometimes these market days were fixed at every tenth day, sometimes every seventh or every fifth day. The Babylonians decided that it should be every seventh day. On this day they didn't work, but met for trade and religious festivals.

3. _____________

The Jews followed their example, but kept every seventh day for religious purposes. In this way the week came into existence. It was the space between market days. The Jews gave each of the seven days a name, but it was really a number after the Sabbath day(which was Saturday). For example, Wednesday was called the fourth day (four days after Saturday)．

4. _____________

When the Egyptians adopted the seven­day week, they named the days after five planets, the sun, and the moon. The Romans used the Egyptian names of their days of the week: the day of the sun, of the moon, of the planet Mars(火星), of Mercury(水星), of Jupiter(木星), of Venus(金星), and of Saturn(土星)．

5. _____________

We get our names for the days not from the Romans but from the Anglo­Saxons, who called most of the days after their own gods, which were roughly the same as the gods of the Romans. The day of the sun became Sunnandaeg, or Sunday. The day of the moon was called Monandaeg, or Monday. The day of the Mars became the day of Tiw, who was their god of war. This became Tiwesday, or Tuesday. Instead of Mercury's name, that of the god Woden was given to Wednesday. The Roman day of Jupiter, the thunderer, became the day of the thunder god Thor, and this became Thursday. The next day was named for Frigg, the wife of their god Odin, and so we have Friday. The day of Saturn became Saeterndaeg, a translation from the Roman, the Saturday.

 

.

The journey to the moon had been the first step toward future exploration(探险) in space. The distance between the Moon and Earth is very short indeed when compared with the distances between Earth and the other planets. Mars, the nearest planet to Earth is millions of miles away. Traveling to the planets will be man’s next aim. Such travels will be more challenging than the trip to the moon and certainly more adventurous.

Recently, two American spaceships, Vikings 1 and 2, landed on Mars trying to discover whether that planet has any life on it. So far the signs of life on Mars has neither confirmed(确认) nor ruled out. Russians have discovered that the surface of Venus(金星) is so hot that it is almost certain that there is no life there. Also the atmosphere of Venus is extremely dense(稠) and the pressure is nearly a hundred times greater than that of the Earth’s atmosphere.

Scientists believe man may find planets which have the same conditions as those we have on Earth , but man should realize Earth will be his only home for a long time and begin to love and care for it.

63. According to the passage, traveling to the planets will be ________.

A.  much easier and even more interesting  B.  far more exciting and dangerous

C.  man’s final aim                    D.  man’s first step

64. Which of the following is Not true?

A.  Mars is nearer to the earth than the moon.

B.  The moon is much nearer to the earth than Mars.

C.  Of all the planets, Mars is the nearest to the earth.

D.  All the planets are much farther to the earth.

65. From the passage, we can guess_____.

A.  there is life on Mars       

B.  there is no life on Mars

C.  the atmosphere of Mars is not so dense as that of Venus

D.  scientists will have little hope to find the answers

66. Man can live on under the conditions of _______.

A.  much too hot surface                   B.  the same pressure as we get on earth

C.  normal atmosphere as we have on earth     D.  both B and C

 

违法和不良信息举报电话：027-86699610 举报邮箱：58377363@163.com

精英家教网