1 . After taking into account other risk factors for cancer such as age, weight, physical activity, and fat intake, the authors found those consuming high amounts of artificial sweetener had a higher cancer occurrence rate _______ non-consumers. (用适当的词填空)

2 . Smith先生看起来更像是艺术家而不是医生。(more like) (汉译英)

3 . 你的钢笔书写起来和我的一样流利。
Your pen writes________ ________ ________mine.

4 . In fact, the discontent is not useless since you may learn more from it ________ from the things that cheer you up. （用适当的词填空）