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photograph

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

(Paragraph3，Passage4)Scientistsbegantotrymakingsyntheticdiamondstowardstheendoftheeighteenthcenturyanddiscovere

Afteryearsoffalsestarts,withthefirstcommercialsalespossiblewithinmonths,anewindustrysellingmotorfuelmadefrom

Themachinewillcontinuetomakemuchnoisewehaveitrepaired.

WhenTomappliedfora______intheofficeoftheimportandexportcompany,hewastoldtoseethemanagerfirst.

Johnhadneverbeenabroadbefore,________hefoundthebusinesstripveryexciting.

A、Waystomakequickandroughguesses.B、Humanbeings’inbornsenseofnumbers.C、Thedevelopmentoftheabilitytoestimate.D

A、Theycandowellinamathachievementexamination.B、Theycanestimatethenumberofemptyseatsonthebus.C、Theydeveloped

A、Forabout7days.B、Forabout10days.C、Forabout16days.D、Onlyforweekends.B短文中提到，寒假期间，所有的宿舍楼中只有ButlerHall开放，其他宿舍楼在2月7日

A、BecauseshehastosendTimtotheairport.B、BecauseshehastopickupTimatthehospital.C、Becauseshehastotakehermu

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7，17，36，55，128，48，()。

在条件宏设计时，对于连续重复的条件，要替代重复条件式可以使用下面的符号______。