An __________ is a short film on television or short article on radio that is intended to persuade people to buy something.

A. argument B. announcement C. advertisement

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科目：初中英語 來源：2017屆深圳新華中學(xué)中考英語模擬試卷 題型：閱讀理解

Sometimes we wish that we could have more time. The good news is that this year will be longer than the previous! Although don’t get excited just yet, because if you blink (眨眼), you may just miss it. That’s because 2015 will be one second longer than 2014 －also known as a leap second (閏秒). And surprisingly, they are pretty common. But why do we need them?

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My win at chess raised my spirits a little.

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