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—Whatashame!Itturnedouttobeafailure.—Wemissedaprocess,wecouldnotsucceedintheexperiment.A.andotherwiseB.andthereforeC.orperhapsD.butluckily

题目详情
— What a shame ! It turned out to be a failure.
— We missed a process,_______ we could not succeed in the experiment.
A.and otherwise B.and therefore C.or perhaps D.but luckily
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答案和解析
B