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题库 / DaQuan-SC-4801
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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C recover from sea
E recovering...... to try to do do 和做的内容重复了
recover out of 不好
C：trying 这件事很worthwhile？
However, "trying to ..." cannot be said to be expensive. We can say "to recover ..." is an expensive process, but we cannot say "trying to recover ..." is an expensive process. So (C) is illogical.
out of out of 侧重于从里向外，译为“从„„里出来” 例如：We are moving out of our flat.
所以此处，是不是 from 比 out of 合理
However, "trying to ..." cannot be said to be expensive. We can say "to recover ..." is an expensive process, but we cannot say "trying to recover ..." is an expensive process. So (C) is illogical.
recovery from not recovery out of
c recover...out of... 错误
e recovering 和 to try to do 的do重复
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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C: trying (to do sth) may be worthwhile 试图这件动作不是worthwhile的
D: sth may be worthwhile to try (to do 多余）
C: *uranium out of seawater* is wrong, suggesting that uranium, in big volumes, is kept in sea and it just need to be taken out from the sea. But actually uranium is processed out.
D: try for
E: *Recovering ... try to do* (redundant)
B：try and recover并列错误
C: out of seawater搭配不对
D:to try当主语不如形式主语It 好
E:to do多余
C&D: recover out of 不对
E: to try to do -->to try to do recovering，不对
2. idioms: recover from. not "recover out of",排除c/d
剩下a/e, e中worthwhile to try就可以了，后面的to do有点redundant. sth may be worthwhile to try. try后面的宾语又是该句的主语，这就变成了“sth may be worthwhile to try sth“--> redundant.
最后剩下a.