• 龙津小学-李彤-语文-要下雨了

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    • π 知多少

     

          π 知多少   

         圆周率,一般以π来表示,是一个在数学及物理学普遍存在的数学常数。中国数学家刘徽用割圆术得出精确到两位小数的π值。南北朝时代数学家祖冲之进一步得出精确到小数点后7位的π值。阿拉伯数学家卡西在15世纪初求得圆周率17位精确小数值。进入二十世纪,随着计算机的发明,圆周率的计算有了突飞猛进。借助于超级计算机,人们已经得到了圆周率的2061亿位精度。如下是华罗庚的背π的口诀:

            3 . 1 4 1 5 9 2 6 5 3 5 8 9 7 9 3 2 3 8 4 6 2 6
      山巅一寺一壶酒,尔乐苦煞吾,把酒吃,酒杀尔,杀不死,乐尔乐。
      4 3 3 8 3 2 7 9 5 0 2 8 8 4 1 9 7 1 6 9 3 9 9 3 7
      死珊珊,霸占二妻。救我灵儿吧!不只要救妻,一路救三舅,救三妻。
      5 1 0 5 8 2 0 9 7 4 9 4 4 5 9 2 3 0 7 
      我一拎我爸,二拎舅(其实就是撕我舅耳)三拎妻。
      8 1 6 4 0 6 2 8 6 2 0 8 9 9 8 6
      不要溜!司令溜,儿不溜!儿拎爸,久久不溜!

            同学们能背到多少位呢?想一想用π的近似数来表示π是不是非常简洁,那么π的近似数还可以怎么表示呢?

            

    • Exam2

    二、完形填空

    Lin Fua’s house is about 10 kilometers ___school. He gets up at six o’clock every day, showers and has a quick breakfast. Then he leaves ___school at around six-thirty. First, he ___his bicycle to the bus station. That ___about ten minutes. Then the early bus takes him to school. The bus usually takes about 25 minutes.

    1. (       )     A.  from  B. in  C. on
    2. (       )     A. from  B. for  C. to
    3. (       )     A. ride   B. rides C. ridding
    4. (       )     A. spends B. co st  C. takes

     参考答案

    • saying 1

    Please choose one picture and make a dialogue with your partner, the more the better.

     

    reference sentence

    I /he/she am/is good at ……

    what can he do?

    Could he do …..?

    I can ……

     

     

     

     

    • Practice1

    Writing a story about life in space with your imagination of creativity. Please use the present tense, and you kan use the pictures as followed.

    for example: In the year 30000, I have taken a trip to the space...

     

     

     

    • Interest Group1

    • writing 1
    学生自我介绍相关的技能
    Key points:
    I can ……
    I am good at……
    I want to join ……
    单词和词组:dance、paint、sing、swim、trumpet、violin、play the guitar/piano/drum、speak English、English club 、art club、music club.
    • Exam1

    一、根据首字母和汉语完成单词

    1. My brother has a_______ finished his homework. 
    2. Have you been to the school library r________? 
    3. Now let’s ________(分享) the bread with them. 
    4. Why does Tony know so much about space _________(旅行)? 
    5. Have you heard the ________ (最新) news?

    二、根据汉语提示完成句子。

    1. 飞机已经到达了吗?_______ the plane _______ ________?
    2. 我听说你父母到北京出差去了? 
    I hear your parents ______ ______ _______ Beijing ______.
    3. 你觉得这本小说怎么样? 
    ______ ________ _______ ________ _______ the novel?
    4.你在忙什么呢? 
    ______ are you _______ ________?
    5. 请你记住回信。 
    Please _______ ______ write _______ _______ me.

    三、选择填空。

    1. Don’t forget ______ this book to the library tomorrow.

    A. to return B. return C. returning D. returned

    2. My father had to work ______ Sunday morning.
    A. in B. to C. on D. at

    3. “_____ does it take?” “It takes half an hour.”
    A. How long B. How soon C. How far D. How often

    4. Please remember _______ to Beijing ______ business ______ plane.
    A. go ; on ; by B. to go ; by ; in C. to go ; on ; by D. go ; on ; in

    5. ----Have you heard the news ______?
    ----No, not ______.
    A. already ; already B. yet ; already C. yet ; yet D. recently ; already

    四、补全对话。 
    A: Mum, I’ve lost my art book. Have you _______ it anywhere?
    B: Is it the book ______ a red cover?
    A: Yes, that’s ______! Where did you _______it?
    B: Sorry, I ______ seen it ______. _______ _______ you tried to look______it under your bed? Maybe you dropped it there.
    A: Oh! Here it ______. ________ goodness!
    B: You should ______ more careful from now on.
    A: Yes, it won’t happen.

     

    • Reading2

         

    My name is Terry. Look at the map of my neighborhood.

    There are a few tall buildings near the park. I live in a flat in one of those buildings. The park is very beautiful. There are a lot of trees in it.

    On the main street is a bank. Next to the bank is a hairdresser. Next to the hairdresser is a clothes shop. Across the road, there is a noodle. On the left of the restaurant is a cake shop. On the right of it is a grocery shop.

    It is usually crowed at the weekends. Many people go shopping in the supermarket. The market is very big and very clean. My neighborhood is a busy and nice place.

    • Exam3

    三、阅读理解

    (A)

    Bicycles are important transport. There are many advantages to go to school by bike. Firstly, it is cheap and fast when your home isn't far from school. Secondly, it is a good way to exercise and it can make you strong and healthy. Thirdly, when you go to school by bike, you can enjoy the beautiful sceneries and at the same time you can enjoy a wonderful talk with your friend. But when students ride their bikes, they must obey the traffic rules and they shouldn't do dangerous tricks on their bikes. Besides, their bikes must have brakes. What's more, they should learn basic cycling skills and check the tires often.

     

    What transportation does the article mention?

    A. car  B. train  C. bicycle

    What is not the advantage of bicycle?

    A. it is a good way to exercise and it can make you strong and healthy.

    B. when you go to school by bike, you can enjoy the beautiful sceneries and at the same time you can enjoy a wonderful talk with your friend.

    C. It is faster than car

    What shouldn’t students do when they ride bicycles?

    A. they shouldn’t obey the traffic rules

    B. they shouldn’t learn basic cycling skills and check the tires often.

    C. They shouldn’t do dangerous tricks on their bikes

     

     

    (B)

    Comparing to all means of transportation, I prefer to take a flight. Maybe some people argue that take a plane is the most dangerous path of travel around. They recommend that train is saver and shipping is cheaper. However, from my part of view, while taking a train we exchange comfort for safe. In the same way, we exchange time for cheaper while shipping. A bit more dangerous as it is, taking a flight is much more comfortable and faster. In case of these, I choose flying as my best choice.

    What transportation does the writer like most?

    A. plane  B. train  C. subway

    What is the disadvantage of flight compared to train?

    A. Dangerous

    B. Cheap

    C. Uncomfortable

     参考答案

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