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    3. How long has Mr Smith (教) English so far?

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    Do you have a mobile phone? Do you send text messages to your friends and family?

    Text messaging or texting is becoming very popular. But scientists have discovered that texting can give us problems with our hands. Be careful!Too much texting can cause swelling (肿胀) in our thumbs (拇指) . Our thumbs are not made for pushing small buttons (按钮) over and over. Scientists call this problem RSI  (重复性劳损) . Harriet Wilson,who treats many people with RSI,says we need to see how much time we spend in typing text messages. If we spend more than 10〜15 minutes once,we may have problems in the future.

    As mobile phones develop,they are getting smaller with buttons closer together. Texting with a smaller phone is worse than using a larger phone with bigger buttons. Using a computer keyboard and playing video games can cause the same problem. So more and more people find themselves with RSI. Among them,most are university students and teenagers,as they do not know the risks of spending so much time using computers,mobile phones and playing video games.

    根据短文内容，回答下列问题。

    51. What is becoming very popular now?

    52. Does the underlined word “once” mean “one time” in the second paragraph?

    53. Who is easier to have the problem of RSI?

    54. What can also cause the problem of RSI except texting?

    55. Which is easier to cause the problem of RSI,using smaller mobile phones or larger ones?

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    科目：初中英语 来源： 题型：

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    () 7. China Dream is a great way to gather people together and the fast development of our own country.

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    科目：初中英语 来源： 题型：

    Is the whale the world’s largest fish? No. It looks like a fish,but it is not. Then what’s the world’s largest fish? It's the whale shark.

    Although the whale shark is our biggest fish and lives in many seas around the world,few people have ever heard of it. Scientists have not studied whale sharks for very long. So we know little about them.

    A whale shark is sometimes called “a gentle giant (温柔的巨人) ” It likes to be alone and doesn’t care a bit about divers or humans. The biggest whale shark weighed 55 ,500 kg and was nearly 20 metres long.

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    This gives scientists a wonderful chance to study the large fish. Whale sharks do live in other seas of the world,but no one knows their population. It is possible that our biggest fish may need protecting. It is one of the reasons why scientists continue to learn about these gentle giants.


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       A. are not interested in learning about them.

       B. find them too difficult to catch

       C. do not know the best places to find them

       D. have studied them for only a short time

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       A. They have large mouths.

       B. They keep away from humans.

       C. They have many small teeth.

       D. They live in many seas.


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       A. By giving reasons.

       B. By describing colours.

       C. By comparing sizes.

       D. By using numbers.


    () 44. The fifth paragraph is mainly about.

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       C. how different fish use their gills

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    1. How lucky we are (live) in this modern city!Everything is convenient.

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