单项选择题

The underlined word "undue"(Para. 2) means“______”.

A．improper
B．adequate
C．unexpected
D．excessive
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单项选择题
Consumers are concerned about the changes in package size, mainly because______.
A．they hate to see any changes in things they are familiar with
B．the unit price for product often rises as a result
C．they have to pay for the cost of changing package sizes
D．this entails an increase in the cost of packaging
单项选择题
According to this passage, various types of packaging come into existence to______.
A．meet the needs of consumers
B．suit all kinds of products
C．enhance the market position of products
D．introduce new products
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