完形填空。 Most people want to work, but it is 1 in today's world to find work for everybody.  The economics(经济)of the world need to 2 by 4% each year 3 the old number of jobs for people.Often this is not 4 , and so more working people are 5 work. Some people have no jobs now 6 new machines can 7 the work of many people in a short time. Also, machines do not 8 more money and longer holidays. In all of the countries of the world, machines 9 work from people, both in factories and on the farms. Lots of people are 10 the cities each day to look for jobs, but only a small number of them can find jobs. (     ) 1. A. quite difference (     ) 2. A. become (     ) 3. A. even to put (     ) 4. A. possible (     ) 5. A. at (     ) 6. A. when (     ) 7. A. do (     ) 8. A. want to (     ) 9. A. are changing (     ) 10.A. trying out B. more difficult B. develop B. to get to B. easy B. except B. because B. make B. pay for B. are turning B. moving to C. the most important C. grow C. so as to stay C. enough C. without C. if C. bring C. spend on C. are stopping C. returning from D. very enjoyable D. rise D. just to keep D. full D. out D. until D. help D. ask for D. are talking D. living in