Consumers are concerned about the changes in the package size, mainly because ______.
A. they hate to see any changes in things they are familiar with
B. the unit price for a product often rises as a result
C. they have to pay for the cost of changing package sizes
Average family pays ______ dollars a year for packages according to this report.
A. 100
B. 200
C. 300
Chinese characters need （）.
A. three and four-key combinations
B. English keyboards
C. different computers
D. Western-style keyboards
28（）
A. learn
B. honour
C. take
D. give
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