问题 问答题 简答题

什么是动校正?什么是静校正?

答案

参考答案:

动校正:把非零炮检距对应的正常时差校正为共中心点处的旅行时间,即正常时差校正,目的是实现同相叠加以及将反射波时距曲线展成与地下界面相一致的形状;

静校正:对由表层不均匀性引起的时差校正称为静校正。

阅读理解

Dear Betty,

I hope you’re well. I’m on holiday in London with my friend Jenny. We arrived by plane on Monday and took a taxi to our hotel. I went for a walk in Hyde Park but Jenny didn’t come with me because she was tired.

Then on Tuesday we saw the clock, Big Ben, and Buckingham Palace. Queen Elizabeth lives in the Palace, but we didn’t see her! I bought some presents but Jenny didn’t buy anything!

The next day we visited the British Museum and had dinner in a Chinese restaurant!

On Thursday morning we relaxed. Then we went to Tower Bridge on the River Thames and looked at the city. It’s very big!

Finally today I did some shopping and Jenny listened to a concert in the park. I came back to the hotel and read the newspaper. Then I wrote some postcards and sent some emails. I took lots of photos and I’m sending them with this email to you!

Tomorrow we’re going to fly home. It was a short holiday, but it was great! Say hello to your mum and dad.

Love,

Gran

根据短文内容, 回答下列问题。(10分)

小题1:How did Gran and Jenny go to London for a holiday?

                                     

小题2:Why didn’t Jenny go for a walk in Hyde Park?

                                      

小题3:Did Jenny buy anything on Tuesday?

                                      

小题4:When will Gran and Jenny go back home?

                                        

小题5:How did Gran feel when she traveled in London?

                                        

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