GRE

简答题根据以下内容,分别回答题。
Aspirin’s ability to___________ the production of throm boxane,a clotting factor,makes it useful in the prevention of stroke and heart attack in people prone to blood clots.

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E.Work backward.If aspirin prevents stroke in people prone to blood clotting,it must do that in a way that keeps blood from clotting一that inhibits clotting(choice E).