请认真阅读下列短文，并根据所读内容在文章后表格中的空格里填入一个词。注意：每个空格只填1个单词；请将答案写在答题卡上相应题号的横线上。
Aspirin
Aspirin (acetylsalicylic acid) has been used for many years as a painkiller. It also has an anti-inflammatory (消炎) action and can be used to reduce fever. Aspirin is already recommended for people to prevent stroke and heart attack because it improves one's blood circulation. So many people already take daily aspirin as a heart drug. Although aspirin can cause deadly internal bleeding, which is relatively rare, its benefits for people are great, not only to help increase the length of people's lives, but to prevent and treat cancer, or to stop cancer spread according to the latest research.
Taking a low dose (剂量) of aspirin every day can prevent and possibly even treat cancer, fresh evidence suggests. Prof. Peter Rothwell, from Oxford University, and his colleagues, who carried out the latest work,
