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题型：单选题题类：模拟题难易度：普通

There is useful book and interesting magazine on the desk. They are my brother's.

A、a, an, all B、a, a, both C、a, an, both D、an, a ,all

举一反三

--Have you __________ been to Xiamen?

--No, __________.

The boy is jumping(跳跃) ____________ a monkey.

Do you know how long the meeting has _______?

—I am not good with my friends. Could you give me some ?

—Sure. You could communicate with them better.

找出错误并改正。

I want to be ____ scientist like Qian Xuesen when I grow up.

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