2)The population in this city has now increased (decreased)to 800,000.
3)The output of July in this factory increased by 15% compared with that of January.
例如:
With the improvement of the living standard,the proportion of peopFrom the graph listed above,it can be seen that studentuse of computers has increased from an average of less than two hours per week in 1990 to 20 hours in 2000.