For more than twenty years scientists have been searching for signs of life on other planets.Most of these searches have been done over the radio.The hope is that someone in outer space may be trying to get in touch with us.Scientists also have sent radio and television messages,as well as messages on spaceships travelling through space,on the chance that someone maybe receptive to such messages.Scientists are using powerful radio telescopes to listen to signals from about 1000 stars,all within 100 light years of Earth.In addition,they will scan(扫视) the entire sky to“listen”for radio messages from more distant stars.Using a computer, they will be able to monitor more than eight million channels at one time.Scientists are looking for any signal that stands out from the background noise.

Of the 200 billion stars in the Milky Way galaxy,scientists find that five percent are like our sun.Perhaps half of them have a planet like Earth.Such a planet would be a reasonable distance from the star for temperatures to be right for the evolution(进化) of life.Based on the inhabitable(that can be lived in)planets in our galaxy,most scientists agree that chances are likely that one or more of these planets supports some life.However,many scientists wonder whether intelligent(有智力的)life exists on other planets.Some believe that twenty years of searching without any intelligible messages shows that no one is out there. They say that the evolution of intelligence comparable to ours is unlikely.

Other scientists believe that our search hasn't been long enough to rule out the possibility that intelligent life exists in our galaxy.Although our sun family is only about five billion years old,our galaxy is about 20 billion years old.In that time some scientists think it is likely that civilizations(文明)much more advanced than ours have developed.Perhaps these civilizations send us no signals;perhaps we have not recognized the signals they have sent us.If we hope to find intelligent life,the scientists believe that we have to keep looking.

 

68.According to the passage,how many planets in our galaxy might be inhabitable?

       A.5 billion.           B.10 billion.      C.15 billion.   D.20 billion.

69.The first paragraph in this passage is mainly about ____ .

       A.how scientists are looking for signs of life on other planets

       B.why scientists are looking for signs of life on other planets

       C.where scientists are looking for signs of life on other planets

       D.when scientists began to look for signs of life on other planets

70.The underlined word“monitor”in the passage means“____”.

       A.find                    B.follow                C.check                 D.form

71.Which of these statements is true based on the information in the passage?

A.The earth is one of the oldest planets in our galaxy.

       B.Most scientists believe that there is intelligent life on other planets.

       C.Scientists are trying different ways to find signs of life on other planets.

       D.Scientists don't believe that intelligent life exists on other planets.

Reducing the amount of sleep students get at night has a direct impact on their performance at school during the day. According to classroom teachers, elementary and middle school students who stay up late exhibit more learning and attention problems. This has been shown by Brown Medical School and Bradley Hospital research. In the study, teachers were not told the amount of sleep students received when completing weekly performance reports, yet they rated the students who had received eight hours or less as having the most trouble recalling all the material, learning new lessons and completing high quality work. Teachers also reported that these students had more difficulty paying attention. The experiment is the first to ask teachers to report on the effects of sleep deficiency in children. Just staying up late can cause increased academic difficulty and attention problems for otherwise healthy, well functioning kids, said Garharn Forlone, the study’s lead author. So the results provide professionals and parents with a clear message: when a child is having learning and attention problems, the issue of sleep has to be taken into consideration. “If we don’t ask about sleep, and try to improve sleep patterns in kids’ struggling academically, then we aren’t doing our job”, Forlone said. For parents, he said, the message is simple, “getting kids to bed on time is as important as getting them to school on time.”

 

65.What were teachers told to do in the experiment?

       A.Monitor students’ sleep patterns.

       B.Help students concentrate in class.

       C.Record students’ weekly performance.

       D.Ask students to complete a sleep report

66.According to the experiment, what problem can insufficient sleep cause in students?

       A.Declining health.                                  B.Lack of attention.

       C.Loss of motivation.                              D.Improper behavior.

67.What message did the researcher intend to convey to parents?

       A.They should make sure their children are always punctual for school.

       B.They should ensure their children grow up in a healthy environment.

       C.They should help their children accomplish high quality work.

       D.They should see to it that their children have adequate sleep.

 

Balancing Work &Life

Robert Holden, Ben Renshaw

£9.75

Balancing Work. & Life focuses on the key challenge of our generation. It is a must read for anyone who is trying to balance work success, family joy and life fulfillment.

?Practical techniques show you how to identify your goals and make choices.

?Clear text and illustrations cover every aspect of defining success, implementing changes and achieving balance.

?Simple checklists enable you to take control and stay motivated. Accessible flow charts and diagrams explore different options for taking action and provide useful examples.

Happiness Now!Robert Holden

£7.00

“I consider this book a true gift and hope that millions will read it,” John Bradshaw, author of Homecoming.

Happiness NOW! is a powerful journey of exploration and insight into one of life most treasured goals. Using a highly original mix of stories, exercises, meditations and poetry, it offers a message of profound hope and healing.

Radical and compassionate, challenging and practical, Happiness NOW! delivers keys to true happiness, inner confidence, loving relationships and peace of mind. This book is the key text for the public seminars of The Happiness Project.

The Secrets of RelationshipsBen Renshaw

£9.50

Are you looking for a fulfilling relationship? If so, The Secrets is required reading whether you are single or attached. Here is a book that reveals the real answers to the relationship roller coaster. Read this book and discover.

?The secret of finding the right partner

?The secret of communicating successfully

?The secret of getting along

?The secret of having what you want

Witty, honest and essential? The Secrets is your passport to a whole new relationship experience.

Order now on line, you can get a 10% discount. More information, please click here.

 

56.If you are always annoyed by endless overtime work, which book can probably offer you help?

      A.Happiness NOW!                                 B.Balancing Work & Life.

       C.The Secrets of Relationships                 D.Happiness NOW! and The Secrets

57.The information above is probably taken from          .

       A.a guide book        B.a magazine           C.a website             D.a local newspaper

58.If you want to immediately buy a copy of Happiness NOW! and two copies of The Secrets of Relationships on line, how much should you pay?

       A.£26                   B.£2.6                  C.£28.75              D.£23.4

59.The three books mainly help us          .

      A.make good friends easily                      B.improve our life quality

      C.hunt for a satisfactory job                     D.identify our goals

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