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题型：单选题题类：模拟题难易度：普通

This is _____ third year that China has taken part in the activity Earth Hour. But we hope we can try our best to make the earth ____better world.

A、 the; a B、a; the C、the; / D、the; the

举一反三

—Do you know ______ lady in yellow ?

—She is ______ friend of mine .

——What do you think of ____________ 8th China Flower Expo in our city?
——It was ____________ big success, I think.

Ted wanted to tell his friends funny story, but he forgot the ending himself.

Look! That is ____ yellow ruler.

—I think this is________ usual experience.

—But I don't think so. It's________ unusual one for me.

There is ____ island in the middle of the lake. It's___most beautiful island I have ever seen.

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