WARNING(警告): Holding a cell phone against your ear or putting it in your pocket may be bad for your health. This sentence is a warning that you'd better not put it close to you when a new phone is bought. Apple company, for example, doesn't want iPhones to come closer to you than 1.5 centimeters; Research In Motion, BlackBerry's producer, recommends 2.5 centimeters.

      If cell phone use can cause health problems, the result will be very serious. Americans spend 2.26 trillion minutes chatting on cell phones every year, which brings $109 billion for the wireless businessmen.

      Devra Davis, an epidemiologist(皮肤病专家)who has worked for the University of Pittsburgh, has published a book about mobile phone radiation(辐射)"Disconnect." Davis studies how often brain cancer happens during different age groups. As a result of mobile phone radiation, she finds that a big increase(增长)in brain cancer in the 20-to-29 age group and a drop for the older people.

      Children are more easily hurt by radiation than grown-ups, Ms. Davis and other scientists point out. But no studies have yet been finished on cell phone radiation and children, she says.

      Henry Lai, a research professor, began lab radiation studies in 1980 and found that mice exposed to(暴露在) radiofrequency（电波频率）radiation had destroyed DNA in their brains.

      Ms. Davis recommends using wired earphones（有线耳机）or the phone's speaker. Children should send text messages rather than call, she said, and pregnant women should keep phones away from their bodies.

Lucy设计了几条谜语，请你帮助她把对应的谜语序号填在图片下方

①  {#blank#}1{#/blank#}     

②   {#blank#}2{#/blank#}        

③  {#blank#}3{#/blank#}                            

④   {#blank#}4{#/blank#}       

⑤   {#blank#}5{#/blank#}  

A. I like to drink ink (墨水). I can help you write (写). You can find me in a pencil box.

B. I'm round (圆的). You like to play with me in a PE(体育) class.

C. I have many colors, I can help you when you're in a new place (地方).

D. We're red and we are good for your health (健康).

E.  I have some numbers on my face (脸). I can help you when you don't know the time.

    This is a picture of a classroom. The classroom is not big （A）______ very tidy. You can see a teacher's desk, five desks and six chairs. You can see a boy and a girl, too.

    Three books are (B) on the teacher's desk. A pencil case is on the desk. Two pens and two rulers are in the pencil case. (C) 一个书包在椅子上。

    The girl is Mary. She is twelve. The boy is Ben. He is thirteen. (D) They are good friends. Their teacher is Miss Green. She is not here.

根据短文内容，完成下列各题

    "Have you finished your lesson, George?" said Mr. Prentice to his son, who had laid aside his book and was busy making a large paper kite.

    "No, father, "replied George, hanging down his head.

    "{#blank#}1{#/blank#}"

    "Because it is so difficult, father. I'm not sure that I shall learn it.{#blank#}2{#/blank#}My memory is so bad."

    "If I were to promise you a holiday on the thirtieth of the month after next, do you think you would forget the date?"

    "{#blank#}3{#/blank#}"

    "You are good at skating, and flying your kite, and playing footballs, aren't you?"

    "Yes, father."

    "And you cannot learn your lesson! My dear boy, you are lying to yourself.{#blank#}4{#/blank#}"

    "But have I not tried, father?" again asked George.

    "{#blank#}5{#/blank#}Come, for this afternoon lay aside that kite you are making, and give another effort to get your lesson ready. Be serious, and you will soon learn it."

     Danny and Jenny are talking about their school science fair. They are very excited. Danny is ready for the big science fair next year. He hopes to win first prize. His project is about silk worms. She is interested in that. She made a video about silk worms. She has a small piece of old silk. She also has a silk worm for the visitors. She thinks silk worms are interesting. What's Danny's project about? It's all about donuts. He talks about the history of donuts. He will make ten different kinds of donuts. You can taste them if you go to the science fair.