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It may someday be worthwhile to try to recover uranium from seawater, but at pre
It may someday be worthwhile to try to recover uranium from seawater, but at pre
游客
2025-02-25
11
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问题
It may someday be worthwhile to try to recover uranium from seawater
, but at present this process is prohibitively expensive.
选项
A、It may someday be worthwhile to try to recover uranium from seawater
B、Someday, it may be worthwhile to try and recover uranium from seawater
C、Trying to recover uranium from seawater may someday be worthwhile
D、To try for the recovery of uranium out of seawater may someday be worthwhile
E、Recovering uranium from seawater may be worthwhile to try to do someday
答案
A
解析
根据题意套此结构,选A。B中的to try and recover的表达是不对的,必须是try to dosth.或try doing sth.;D中的try for指“谋求,争取”,改变原句意思。E中try to do与句首的recovering属语义重复现象,没有A简洁。C用动名词作主语,按理说是可以成立的,但动名词与动词不定式作主语有唯一的细微差别:即动名词一般指通常性的、习惯性的动作,而动词不定式指某一特定动作(试比较:selling insurance is a prettily boring job和It was difficult tosell my car.),而本句中用了someday,表明是某一特定动作,因而选A排除C。
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