People have (11) flying saucers for over a (12) years now and scientists have reported other things in space too. Many scien

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问题 People have (11) flying saucers for over a (12) years now and scientists have reported other things in space too. Many scientists have tried to (13) flying saucers but most have (14) . They have been called many names because no one is (15) what they are.

People have seen flying saucers for over a thousand years now and scientists have reported other things in space too. Many scientists have tried to photograph flying saucers but most have failed. They have been called many names because no one is sure what they are.

选项

答案sure

解析

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本试题收录于：大学英语三级B级题库大学英语三级分类

大学英语三级B级

大学英语三级

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People have (11) flying saucers for over a (12) years now and scientists have reported other things in space too. Many scien

大学英语三级B级

大学英语三级

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A、Hestartedasmallbusinessofhisown.B、Helivedaloneandhardlylefthishome.C、Helivedwithhisfamilyinasmalltown.

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