Industrial accidents are more common when some of the people in safety-sensitive jobs have drinking problems than when none do.  Since, even after treatment, people who have had drinking problems are somewhat more likely than other people to have drinking problems in the future, any employer trying to reduce the risk of accidents should bar anyone who has ever been treated for a drinking problem from holding a safety-sensitive job.

 Which of the following, if true, most seriously undermines the argument above?

A.      Some companies place employees who are being treated for drinking problems in residential programs and allow them several weeks of paid sick leave.

B.       Many accidents in the workplace are the result of errors by employees who do not hold safety-sensitive jobs.

C.      Workers who would permanently lose their jobs if they sought treatment for a drinking problem try instead to conceal their problem and continue working for as long as possible.

D.      People who hold safety-sensitive jobs are subject to stresses that can exacerbate any personal problems they may have, including drinking problems.

E.       Some industrial accidents are caused by equipment failure rather than by employee error.

答案是c,请问NN?

题意看懂。这种题目变成中文都会做的。

一旦被查出曾经接受过治疗就永远不能从事相关工作。

正常人会怎样。

就是隐瞒，瞒的一时是一时咯。

gmat不允许有常识介入，但是人性不是常识。

A公司可以安排接受治疗的人去其他工作，允许有病假。注意more common的safety－sensitive job是主流。无关

B同理，整个题目说的是safety－sensitive job，你一竿子扯远了。

D有压力，有压力你喝酒一样是不能工作，压力和失去工作是两码事。无关。

E扯到机器上去了，工作和机器有啥关系。无关。

不知道这么解释你懂不懂。

B 选项我认识它削弱了第一句话，是前提而不是结论。所以不能选B

C 这句话其实我觉得它主谓宾结构相当纠结。但可以意译成：如果那些WORKERS原本有DRINKING PROBLEM的不想LOSE JOB会选择CONCEAL，那么EMPLOYER在选择时会认为他们没有问题而录用。事实上他们有PROBLEM（会造成ACCIDENT）。这样的话，其实就是因果型削弱中的：无因（EMPLOYER认为他们没有过DRINKING PROBLEM TREATMENT)但有果（他们有PROBLEM会ACCIDENT）

写完好晕~期待意见！