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1. A good exercise program helps teach people to avoid the habits that might shorten the lives. (1)____
一个好的锻炼项目有助于教会人们去避免那些可能会缩短其寿命的习惯。
2. Concentration is one of the most important elements in dangerous driving. (2)____
精神集中是安全驾驶的最重要因素之一。
3. The most easiest process for mining gold is panning, which involves using a circular dish with a small pocket at the bottom. (3)____
采金最简单的方法就是用一个装有小底袋的圆盘子淘金。
4. While technology makes this possible for four or even six billion of us to exist, it also eliminates our job opportunities. (4)____
虽然科技使我们40亿甚至60亿人口存活成为可能，但它也剥夺了我们的工作机会。
