试题题干
Some people believe that smoking may （）one’s life. Not only cancer, but also heart and lung diseases are related with smoking.
参考答案
正确答案：
试题解析
有些人认为吸烟会缩短寿命。不仅癌症，而且心肺疾病都与吸烟有关。shorten缩短，符合句意。enlarge扩大；increase增加；brighten照亮。