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题型：单选题题类：模拟题难易度：普通

_________ trees have been planted these years.

A、Million B、Millions C、Million of D、Millions of

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Did you know that the Earth is home to ________ animals?

It is reported that _____ people in the world are suffering from the H5N6 flu.

—The 15^th Chinese Bridge—Chinese Proficiency Competition will be held this year！

—That's great！ _______ foreign college students are interested in Chinese learning．

Mrs Smith moved to Beijing in her {#blank#}1{#/blank#} (thirty).

At the festival, ________ people get together, laughing, dancing and throwing tomatoes at each other.

visitors came to take photos of Hongyadong during the vacation.

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