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A．Because it was their hometown.
B．Because they wanted to help the AIDS patients.
C．Because they were doing their summer social topics.
D．They were learning medicine and doing research on HIV.
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单项选择题
The Europeans have to reexamine what customer service means because__________.
A．retailers are under increasing pressure to improve their service and cater more for consumer demands
B．America has been set as an example of good customer service
C．they are aware that attitudes to shopping and consumers may vary in different countries
D．consumers’’ income has been reduced
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