In vain______to get in touch with the authorities.

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问题 In vain______to get in touch with the authorities.

选项 A、they tried
B、did they try
C、they have tried
D、the had tried

答案B

解析语法类试题(倒装旬)。in vain后面接倒装句。

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专业英语四级

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In vain______to get in touch with the authorities.

专业英语四级

Whatistherelationshipbetweenthetwospeakers?

Accordingtothewoman,whatgovernstheclotheswewear?

Unlikemostsports,whichevolvedovertimefromstreetgames,basketballwasdesignedbyonemantosuita【C1】______purpose.

Moreteenagerssmoketodaythanatany【C1】______sincethe1970s,afederalstudyshows.Overall,35%ofchildreningrades9—12

1MOSCOW,Russia(Reuters)-ThepersonalfortunesofRussia’s100richestbusinessmenareasbigasaquarterofthenation’sent

Ifyouwantthispainkiller,you’llhavetoaskthedoctorfora______.

Thisbookwillshowthereaders______canbeusedinothercontexts.

Paintinghasbeencontinuouslypracticedbyhumansforsome20,000years.Togetherwithotheractivities【C1】______ritualistic

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Aconvenientwayistosetthefoodonapieceofaluminumoil,______totheairforhalfanhour,andthencoveritwithadish.

()是指在一个管理组织中，命令由决策层发布到执行层各部门，再通过执行层各部门传递至操作层各班组，命令一旦发出，贯彻到底，统一行动。

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