GRE外語考試經典試題（4）

GRE外語考試經典試題（4）

Time –30 minutes 25 Questions

1. Drug companIEs lose money when manufacturing drugs that cure those suffering from rare diseases because selling a drug to only a few people usually does not recoup manufacturing expenses．Therefore, a company manufacturing any of the drugs that cure those suffering from loxemia, an extremely rare disease, will undoubtedly lose money．Which of the following, if true, most seriously weakens the conclusion above？

　　(A)Several drugs that cure those suffering from loxemia also cure those suffering from very common illnesses．

(B)Most of those who contract loxemia also con- tract another illness concurrently．

(C)Most of the drug companIEs that manufacture drugs that cure rare diseases do not manufac- ture drugs that cure loxemia ．
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