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题库 / GMATAdvanced-SC-3
It may someday be worthwhile to try to recover uranium from seawater, but at present this process is prohibitively expensive.
It may someday be worthwhile to try to recover uranium from seawater
Someday, it may be worthwhile to try and recover uranium from seawater
Trying to recover uranium out of seawater may someday be worthwhile
To try for the recovery of uranium out of seawater may someday be worthwhile
Recovering uranium from seawater may be worthwhile to try to do someday
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B:some day放句首影响时态---but后面的句子的时态和前面句子时态不一样，是并列关系。
C:trying to do xxx is worthwhile的说法有误，细微改变原文句意，应该是doing xxx is worthwhile。
D：to try for xxx强调名词，错误
E：doing sth is worthwhile to try就可以，不用再加to do,语义重复
另：recover A from B是固定搭配
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