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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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个人认为这题还是从语意解释好些，头重脚轻谈不上，但硬要抠状语at present和someday的平行也犯不着，状语随处放挺常见的。A选项it作形式主语，指代“to recover uranium from seawater”，句子核心也是它，可以写成“To recover uranium from seawater may someday be worthwhile to try”，说的是“也许有一天从海水中回收铀是值得一试的”；
C项句子核心变成了trying（包括D的to try也是），意思是“试着从海水中回收铀也许有一天是值得的”；
这样比较显然A更合理，谈到平行的话，A的平行更贴切，but从句核心也是the process“从海水中回收铀”和前面对应，前面表语“worthwhile to try”和后面表语"expensive"对应。
在2分钟内，我是挺难看出这俩句意有啥特大的区别，感觉这个时候从平行更好入手一些。在这个句子，状语平行比不平行就是更容易理解一些，句意也更清楚，“今天去做这个实验是好事，但明天做就不太好”，和“做这个实验在今天是个好事，但是明天做就不太好”，还是A平行，且句意清楚。
同意！后面this process 强调的是动作recover 而不是try 这样好像更合理！
请问A为什么it指代的不是to try to recover uranium from seawater?按理说be worthwhile 后面的to do 一串都应该是主语呀登录 或 注册 后可以参加讨论
2.idiom,to try to do是正确用法BD错
3.简洁表达，E的将recover前置，后面用的to try to do，do就代表recover，这个表达方式很不简洁。E错
4.句意推理，CD强调的是try会变得有意义，但是句意应该是recover会变得有意义。CD都错。
谢谢keeson小哥，时隔4个月在看，你说的对！
C. Trying to recover uranium out of seawater主语过长，应该用形式主语it代替更好，而且recover A from B 为固定搭配。
D. To try for错误，其他错误同B。
E. 不是Recovering uranium from seawater 是值得试图去做的，而是 Trying to recover uranium out of seawater是值得做的
(C) Incorrect. For the following reasons:
“Recover x out of y” is incorrect. The correct idiom is “recover x from y”.
With this option, “this process” of the non-underlined part will refer to “trying to recover uranium”. Logically, “this process” should refer to “recover uranium”.
(D) Incorrect. For the following reasons:
The first error of option C
“To try to recover uranium” is much better than “to try for the recovery of uranium”, just as “to try to reduce weight” is much better than “to try for the reduction in the weight”. The first construction emphasizes the action that is being tried.
(E) Incorrect. “To do” is incorrect. If we replace ‘do’ with ‘recover’, the redundancy is evident. “Recovering …. to try someday” would work.
This sentence is well-formed. It appropriately uses the construction to try
to rather than the common yet idiomatically inappropriate to try and. It also
uses the idiomatically correct construction recover . . . from.
A. Correct. This choice is correct for the reasons discussed above.
B. This choice uses the idiomatically incorrect construction to try and.
C. This choice suggests that what is prohibitively expensive is trying to
recover uranium . . . rather than the process of recovering uranium itself.
D. To try for is idiomatically incorrect, as is the recovery . . . out of.
E. To try to do—as opposed to to attempt, for example—is awkward and
unnecessarily wordy.
The correct answer is A.
C项 recover A from B是固定搭配，不能换成out of
D项 try后面不与for搭配
E项 to do 多余
this process [Trying to recover ] is expensive
Intended meaning:
this process [recovering ..[ is expensive.
在A里 It [to recover...] is worthwhile to try
E：recovering就是try to do中的to do，wordy
C 应该是recover from 不是recover out of
D try for discovery 冗余
E recovering 和 try to do的to do重复
try and recover uranium from seawater意思是try uranium and recover uranium，尝试下铀以及回收铀，错误