防雷装置的引下线主要由明敷于建筑物表面由上而下的()构成。 A．圆钢 B．扁钢 C．

Complete the following passage by using the words in the box.  Each word can be used only once.  Note that there is one word more than you need.

A．exchange B．constant C．involve D．spend E. traditional F. offer     G. strength  H. familiar  I. engage  J. element

    We，in the world of fast growth, are now witnessing the appearance of an advanced economy based on information and knowledge. Physical ___1___, raw materials, and money are no longer the key factors in the creation of wealth. Now, the vital ___2___ in our economy is knowledge. Tomorrow’s wealth depends on the development and ___3___ of knowledge.  And individuals entering the workforce ___4___ their knowledge, not their muscles. Knowledge workers get paid for their education and their ability to learn.  Knowledge workers ___5___ in mind work. They deal with symbols: words, figures, and data.
What does all this mean for you? As a future knowledge worker, you can expect to be communicating information. Currently, many jobs ___6___ some form of mind work, and that number will increase sharply in the future.
In the new world of work, you can look forward to being in __7___ training to get new skills that will help you keep up with improved technologies. You can also expect to be taking greater control of your career. Gone are the nine-to-five jobs, lifetime security, easy promotions, and even the ___8___ workplace, which you are __9___ with now. Don’t expect the companies will provide you with a clear career path. And don’t wait for someone to “encourage” you. You have to encourage yourself.