题目内容
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 (闰秒). 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
1.2. 3. 4. 5.
五、 1. longer 2. means 3. add 4. since 5. late
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