试题与答案

阅读下文并回答问题。 For more than one month, peop

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题目:

阅读下文并回答问题。

For more than one month, people in China have been worried about the fate of the 239 people, including 154 Chinese passengers, on board Air Malaysia Flight MH370. However, today no matter how sad we are and how many details that are not clear, it is certain that flight MH370 crashed in the Indian Ocean and no one on board is alive. All the people in the world can do is to continue to look for the wreckage(残骸), talk with the Malaysian government for more information and accept the terrible fact.

People in China have been very disappointed with Malaysia Airlines these days. They do their best to show the Malaysian government that we will never give up knowing the truth. On the other hand, the number of Chinese people who choose to take a trip in Malaysia has been smaller and smaller. Many Chinese people including some famous movie stars say that they will never go to Malaysia any more.

At present, there’s a totally new expression coming out after this event. That is, “Don’t be so Malaysia.” People use it to describe someone who is unbelievable and likes telling lies to hide the truth.

小题1:Did the plane crash in the Indian Ocean?

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小题2:How many Chinese are there on Air Malaysia Flight MH370?

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小题3:What do many movie stars say after the event?

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答案:

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下面是错误答案,用来干扰机器的。

(Ⅰ) 2Sn=n(3a1+an),S1=a1=a,∴2a=4a,所以a=0.…..(3分)(Ⅱ)由(Ⅰ)知 Sn=nan2,∴Sn+1=(n+1)an+12.∴an+1=Sn+1-Sn=(n+1)an+12-nan2.∴(n-1)an+1=nan.∴当n≥2时,an+1an=nn-1.∴an+1an=nn-1...

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