单项选择题

Acer Inc, Fujistu-Siemens, and Toshiba are ______.

A．P. C. makers
B．P. C. sellers
C．P. C. makers or sellers
D．famous computer companies
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单项选择题
It seems that Toshiba ______.
A．is a famous Japanese company
B．is a computer company
C．is a P. C. company
D．has a P. C. factory in China
单项选择题
Since the cost of notebook computers drops, ______.
A．there will be less import of them
B．there will be more buyers
C．the price of them will increase
D．the price of them will drop
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