题目内容
For hundreds of years humans have dreamed of finding life on distant planets.Now the hope of discovering real evidence of life has greatly increased.
NASA's Mars detector（探测器）,Opportunity,succeeded in finding signs that water once existed on the planet.Opportunity landed on Mars in January.Scientists now believe that the planet could once have supported life.
This discovery was chosen by ?Science?,one of the world's leading magazines,as the most important scientific achievement of 2004 last Friday.
“This little,wheeled,one-armed box went around another planet and has done something no human has ever managed,” according to ?Science?.“It has discovered another place in the universe where life could once have existed.
“Although we still can't say that life could have existed in this environment,it is now certain that there was water on Mars,”said Steve Squyres,one of the scientists working on the Mars mission.The evidence comes from pictures and chemical readings taken by Opportunity.It includes marks on rocks like those caused by following water on Earth and salty chemicals like those found in dried-out sea-beds.Scientists said the new evidence proved beyond doubt that water has existed on Mars.But it is still unknown whether the water was like an ocean or just ice.
While Opportunity has not found any signs of life,the presence of water means life is possible.“In everything we know about life on Earth,there is no example without liquid water,” Squyres said.“So water is important for the search for life on Mars.”
Researchers agree that a future mission（任务） should bring back physical samples（样品）.But some scientists worry about the risk that this could introduce dangerous foreign creatures to Earth.“The problem here is how to get the samples back,”Squyres replied.“I think it is our responsibility to limit any risk.”
What proved that water existed on Mars?
A.The physical samples with salty chemicals.
B.The marks on rocks and salty chemicals.
C.Scientific achievements of 2004.
D.Creatures from Mars.
Which of the following is true according to the text?
A.It is now certain that there was water on Mars.
B.The water on Mars was like an ocean.
C.Evidence of life on Mars has been found.
D.Search for life on Mars is a great risk to humans.
How did scientists draw the conclusion that there was water on Mars?
A.The world's leading magazine has announced the fact.
B.Scientists have taken many pictures and chemical readings on the Mars.
C.Astronauts have got some rocks from Mars.
D.Scientists have made a study of the pictures and readings sent back by Mars detector.
It can be inferred that,if the creatures from Mars came to earth,_________.
A.they would be kind to humans
B.they would be cruel to humans
C.they would be a great danger to Earth
D.it would be hard to say whether it would be good news or bad news
【小题1】B
【小题2】A
【小题3】D
【小题4】D
解析:
【小题1】细节题。从第五段第三、四行可知B项正确。
【小题2】细节判断题。从第五段第一句可知A正确,B、C、D三项与原文不符。
【小题3】细节题。从第五段可知D项正确。
【小题4】推理题。从最后一段可排除A、B、C,故D为正确选项。
世纪百通期末金卷系列答案Ireland has had a very difficult history. The problems started in the 16th century when English rulers tried to conquer Ireland. For hundreds of years, the Irish people fought against the English. Finally, in 1921, the British government was forced to give independence to the south of Ireland. The result is that today there are two “Irelands”. Northern Ireland, in the north, is part of the United Kingdom. The Republic of Ireland, in the south, is an independent country.
In the 1840s the main crop, potatoes, was affected by disease and about 750,000 people died of hunger. This, and a shortage (短缺) of work , forced many people to leave Ireland and live in the USA, the UK, Australia and Canada. As a result of these problems, the population fell from 8.2 million in 1841 to 6.6 million in 1851.
For many years, the majority of Irish people earned their living as farmers. Today, many people still work on the land but more and more people are moving to the cities to work in factories and offices. Life in the cities is very different from life in the countryside, where things move at a quieter and slower pace.
The Irish are famous for being warm-hearted and friendly. Oscar Wilde, a famous Irish writer, once said that the Irish were “the greatest talkers since the Greeks”. Since independence, Ireland has revived(复兴) its own culture of music, language, literature and singing. Different areas have different styles of old Irish song which are sung without instruments. Other kinds of Irish music use many different instruments such as the violin, whistles, etc.
【小题1】What does the author tell us in paragraph 1?
| A．How the Irish fought against the English. |
| B．How Ireland gained independence. |
| C．How English rulers tried to conquer Ireland. |
| D．How two “Irelands” came into being.. |
| A．food shortages in the 1840s led to a decrease in population |
| B．people are moving to the cities for lack of work in the countryside |
| C．it is harder to make a living as a farmer than as a factory worker |
| D．different kinds of old Irish songs are all sung with instruments |
| A．the Irish character | B．Irish culture |
| C．Irish musical instruments | D．a famous Irish writer |
| A．Life in Ireland |
| B．A Very Difficult History |
| C．Ireland, Past and Present |
| D．The Independence of Ireland |
The Eiffel Tower was built in 1889, in memory of the 100th birthday of the French Revolution. The Prince of Wales, later King Edward VII of England, opened the tower. Of the 700 suggestions that were handed in, Gustave Eiffel’s was chosen.
However, at first, it was not well accepted by all and a group of people — including many well-known writers and painters at that time — were fiercely against its design.
Being about 300 meters in height, and 7,000 tons in weight, it was the world’s tallest building until 1930. It was a great project for France. 300 workers took two years to build it. It isn’t an ordinary building, since it is almost made of steel. For example, its body moves around at most 12 cm in heavy wind. Moreover, its height changes up to 15 cm according to the temperature.
It was almost destroyed in 1909, but was saved because of its antenna(天线), which is used for communication at that time. Beginning in 1910 it became part of the International Time Service. French radio and French television have also made good use of its height.
The Eiffel Tower has also seen a few strange things. In 1923, a journalist rode a bicycle down from the first level of it. And in 1954, a mountain climber climbed on top of it and tried to measure its exact height.
Anyway, although its birth was difficult, it is now well accepted all over the world. It has been considered as one of the symbols of Paris.
【小题1】The passage mainly tells us ________.
| A．the history of the Eiffel Tower |
| B．some information about its design |
| C．what the Eiffel Tower was used for |
| D．how it became one of the symbols of Paris |
| A．Many people couldn’t accept the Eiffel Tower at the beginning. |
| B．It was the world’s tallest building for hundreds of years. |
| C．A journalist rode down from the Eiffel Tower in 1954. |
| D．The Eiffel Tower was saved because of its height. |
| A．1889 | B．1923 | C．1789 | D．1930 |