题目内容：

阅读下列材料，在空白处填入适当的内容（不多于3个单词）或括号内单词的正确形式。

We're living in a new period of technological and social advancement. Technology has developed at a 1. (fast) speed over the past one hundred years than it had in the previous thousands of years. With this speed of advancement, it's easy to fall behind. Even if a person’s life seems 2.(go) well now, several years down the line, he may find that lack of development in important skills may cause some big 3. (problem) in his life. For example, a person today 4.is comfortable with his job may find himself 5.(replace) by a machine tomorrow.

If we stop trying to improve ourselves, we'll find that our skill level doesn't stay on the same level, but instead 6.(decrease). So we are supposed to keep testing what we know and keep learning new stuff to stay ahead. Also it's a good idea to 7.(careful) evaluate the things and skills in our life 8.replace those outdated things with better ones

Although it's impossible to predict exactly how things 9.(change)over the next few years, with update of our skills and a desire to adapt, we’ll find that we're able to stay ahead 10. a changing world.