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题型：单选题题类：常考题难易度：容易

不定冠词：用于人名前，表示不认识此人或与某名人有类似性质的人或事

—Hello, Could I speak to Mr. John?

—Sorry, wrong number. There isn't Mr. John here.

A、不填 B、the C、a D、an

举一反三

Brazil, ______ country in South America, will hold _____ 31th Olympic Games in the August，2016.

There is Professor Li in his school, too.

I first saw him in ______ evening in June.

David is ________ singer. He thinks it is _______interesting job.

What _____ heavy rain it is! That's just _____ thing that farmers want now!

Do you have an _________ contest?

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