第四篇： Error Correction (15 minutes)
　　Changes in the way people live bring about changes in the
　　jobs that they do. More and more people live in towns and cities
　　instead on farms and in villages. Cities and states have to provide --71.
　　services city people want, such like more police protection, more --72.
　　hospitals, and more schools. This means that more policemen,
　　more nurses and technicians, and more teachers must be hired.
　　Advances in technology has also changed people's lives. --73.
　　Dishwashers and washing machines do jobs that were once done
　　by the hand. The widespread use of such electrical appliances --74.
　　means that there is a need for servicemen to keep it running --75.
　　properly.
　　People are earning higher wages and salaries. This leads --76.
　　changes in the way of life. As income goes down, people may not --77.
　　want more food to eat or more clothes to wear. But they may
　　want more and better care from doctors, dentists and hospitals.
　　They are likely to travel more and to want more education
　　Nevertheless, many more jobs are available in these services. --78.
　　The government also affects the kind of works people do. --79.
　　The governments of most countries spend huge sums of money
　　for international defense. They hire thousands of engineers, --80.
　　scientists, clerks, typists and secretaries to work on the many
　　different aspects of defense.

　　答案：
　　71. (instead) on --- of
　　72. like --- as
　　73. has --- have
　　74. the --- /
　　75. it --- them
　　76. leads --- causes
　　77. down --- up
　　78. Nevertheless --- Therefore
　　79. works --- work/job/jobs
　　80. international --- national