题目内容
These radio signals were heard first in 1967.They were coming from a point in the sky where there were no known stars.They were coming very regularly too:once in just about a second.It was as if they were controlled by a clock.
The scientists who heard the signals did not tell anybody else.They were rather afraid to tell in case they frightened people.The signals were coming from a very small body—no bigger,perhaps,than the earth.Was that why no light could be seen from it? Or were the signals coming from a planet that belonged to some other star?
There was no end to the questions.but the scientists kept the discussion secret.“Perhaps there are intelligent beings out there,”they thought,“little green men who are trying to send messages to other planets,or to us!” So the news was not given to the newspapers.Instead,the scientists studied the signals and searched for others like them.
Well, all that happened in 1967 and 1968.Since then scientists have learned more about those strange,regular radio signals.And they have told the story,of course.The signals do not come from a planet;they come from a new kind of star called “pulsar”.About a hundred other pulsars have now been found,and most of them are very like the first one.
Pulsars are strong radio stars.They are the smallest but the heaviest stars we know at present.A handful of pulsar would weigh a few thousand tons.Their light—if they give much light—is too small for us to see.But we can be sure of this:no little green men are living on them.
1. How was the first pulsar discovered?
A.Scientists heard a new kind of radio signal.
B.Scientists heard radio signals coming from an unknown star.
C.Scientists searched the sky and saw it.
D.Scientists heard radio signals sent by little green men from a small planet.
2.What made the scientists think that the signals might be a sign of intelligent life?
A.Because they were coming from a very small body.possibly a planet.
B.Because they couldn't see the body.
C.Because it seemed that they were controlled by a clock.
D.Because they couldn't understand the messages sent by the intelligent beings.
3.Why didn't they report the news?
A.Because they were afraid of frightening people.
B.Because scientists wanted to keep their discoveries secret.
C.Because the signals were heard only once.
D.Because they didn't know if the signals were from a pulsar.
4. When did they think it safe to report the news?
A.When everyone had forgotten the signals.
B.When the signals stopped.
C.When they were tired of studying the signals.
D.When other pulsars were discovered.
解析:
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There are new and exciting ways to use the Internet to learn English while you are on - line. The Internet uses a lot of multimedia elements (多媒体原理),like words, sounds, pictures, animations and video. This is perfect for studying a language because you've got to see, hear, and repeat things as much as you like. Learning over the Internet is also funny because you can be a part of conversations happening all around the globe ! Special Internet sites are designed for people learning English, just like yourself. These sites use multimedia to help you learn and are a great way to meet other people around the world. This is Cyber English.
On the Internet, English is the major language. As a result, it is now more important than ever to be able to understand English when you serve the web. It is not always easy,though. The English can be difficult or have a lot of cultural information that you have never seen !
One site for students studying English and their teachers is Englishtown. At http://www. english- town. com, you will find a community ( group) of people interested in learning English. There are several buildings in the virtual (虚拟的)town where you can play games, chat with friends, ask and get answers about cultural questions, and find an international penfriend who shares your interests. There are extra resources to help you learn,such as multimedia CD - ROM and books for language learning and translation. You can also have daily and monthly English lessons delivered to your own e - mail address. There is even an on - line school where you can take English classes over Lhe Internet. Englishtown is the perfect place to prefect for a trip to England or the United States ! Would you like to become part of a virtual community(虚拟社区)of English sfH-aktrs : Surfing the web is not only funny but can also help improve your English ! Try out >ome of tlv, web sites listed below and see how students all over the world are learning English on line.
【小题1】Cyber English probably means" ".
A.learning English on Internet |
B.teaching yourself English |
C.the history of English |
D.English broadcast on TV or over the radio |
A.only in this way one can learn the language well |
B.people don’ t have to pay |
C.the learners can have a face to face study of courses with the teachers |
D.it makes learning easier and more interesting |
A.English is the only useful language on the Internet. |
B.The Internet can provide people with the cultural information they need. |
C.At http://www. Englishtown. com, people can study and play. |
D.One can find a pen-friend on http://www.Englishtown. com. |
A.setting up | B.going over | C.researching | D.inventing |
A.show us some of the web sites on which sell books |
B.tell us how to use the Internet |
C.tell us where to get the CD - ROMS we need |
D.show us some of the web sites on which English is taught |
Washington, November 1, 2012 (CNN) -- After years of planning and months of campaigning(竞选), the most expensive presidential race in history comes down to a final five-day whirlwind of speeches and television ads in the eight states still up for grabs.
President Barack Obama and Republican challenger Mitt Romney plan to hold virtually nonstop events between now and the Tuesday election considered too close to call.
The focus is on battleground states worth 95 of the 270 electoral votes needed to win. Both sides are trying to close the deal with a decreasing number of uncommitted(未表态的) voters, while making sure supporters actually cast ballots.
That means a game of campaign chess that started Thursday, with appearances by the candidates (候选人)and their assistants as well as advertising dollars allocated to the places considered most vital to success.
Concluding a race expected to cost more than $6 billion overall, Obama and Romney and their running mates will hit all the battleground states -- Colorado, Florida, Iowa, Ohio, New Hampshire, Nevada, Virginia and Wisconsin. The campaigns also are unloading a blast of television ads and mailings that threaten to overwhelm voters already saturated with politicking. Perhaps no one said it better than 4-year-old Abigael Evans of Fort Collins, Colorado, who -- according to NPR -- cried after listening to more election coverage on the radio and told her mother, ‘I'm tired of Barack Obama and Mitt Romney.’
【小题1】The underlined phrase “too close to call” probably means .
A.a game that one side is clearly winning. |
B.a tie in which neither side seems likely to win |
C.so close that you need not use a telephone |
D.a visit close to one’s home state |
A.To make sure that their supporters understand their policies. |
B.To collect enough money for campaign ads. |
C.To paint their rival as black as possible. |
D.To win over the voters who have not decide which candidate to vote for. |
A.excited | B.disappointed | C.annoyed | D.relieved |