[填空题]
阅读下面这篇短文，短文后有2项测试任务：(1)第23～26题要求从所给的6个选项中为第2～5段每段选择1个正确的小标题；(2)第27～30题要求从所给的6个选项中选择4个正确选项，分别完成每个句子。

{{B}} Aspirin -- a New Miracle Drug{{/B}}
1. Using aspirin, an over-the-counter pill on sale in every supermarket without a prescription, to treat serious circulatory disease may seem almost like quackery. But today doctors recognize this drug as a potent compound as important as antibiotics, digitalis and other miracle drugs.
2. In its natural form as willow bark and leaves, this remarkable remedy dates back to Hippocrates2. In 1829 the chemical in the willow tree that can relieve pain and reduce fever was discovered to be salicin. By 1899 the Bayer Company in Germany had marketed a variant, acetylsalicylic acid, under the name of aspirin.
3. Since then, aspirin and compounds containing aspirin have been taken by tens of millions of arthritis patients. As a pain killer aspirin is, accord

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