Some people believe that smoking may _____ one's life—not only cancer, but also heart and lung diseases are related with smoking.(short)
【正确答案】：shorten
【题目解析】：译文：一些人认为吸烟可以缩短人的寿命不仅癌症，就是心脏病和肺病也都和吸烟有关。由句子结构可知，本处需要一个动词。short是形容词，其动词形式是shorten,意为"缩短，减少"。答案为shorten。
