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题型：单选题题类：模拟题难易度：普通

Mr Philip has made ______ survey on students' lunchtime, and ______ survey shows us a lot of problems.

A、an; an B、the; the C、a; the D、the; a

举一反三

— Excuse me, have you seen _______ umbrella here?
— Yes. Is it _______ beautiful blue one? I saw it here just now.

uncle Tom has _______ store. _______ store is very big.

—Look! There is umbrella here. Is it yours?

—Oh, no. umbrella is Linda' s.

This is ______ arm.

— Kate is _______ American girl, right?

— Yes. She is from _______ United States.

Greece is _________ European country. It's in south part of Europe.

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