Sometimes we wish that we could have more time. The good news is that 2015 will be one second 11 than 2014—also known as a leap second (閏秒). Over the centuries,the earth has been slowing down. This m 2 that we must keep changing our clocks to keep in step with the earth s time. To keep up with the earth’s time,we a 3 a second sometimes. We have been doing this s 4 1972. And this year will be the 26th second weVe added!You will have to stay up 15 if you want to experience it. It’ll be added just before 8：00 a. m. on July 1 Beijing time. So you will see 7：59：60 on July 

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Have you learned?

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3. 在公共場所你應(yīng)該放低音量。

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() 1. We provide hot water everyone here.

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三、完形填空。

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