【GMAT考满分逻辑CR题库】The drug heparin is frequently administered int_真题_答案

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The drug heparin is frequently administered intravenously in order to prevent blood clots. But some doctors point out that thousands of patients undergoing treatment with heparin have suffered adverse reactions in just the last year. Since there are no plans to make any modifications to the drug, adverse reactions in patients being treated with heparin will only increase if use of the drug becomes more widespread.

Which of the following, if true, most seriously weakens the argument?

A
At the majority of the hospitals where the adverse reactions were reported, instruction on the safe administration of heparin had been perfunctory.
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B
Other blood thinning agents, such as warfarin, do not appear safer than heparin.
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C
Heparin is used to treat medical problems that are not expected to become drastically more common in the future.
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D
Adverse drug reactions are frequently underreported.
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E
In less than half of all reported incidents involving heparin did the patient die.
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正确答案: A

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