单项选择题

A．read
B．subscribe
C．collect
D．keep
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单项选择题
The American Red Cross provides all the following services EXCEPT _____.
A．providing first aid
B．providing blood
C．caring for those who are in need
D．demonstrating water safety
单项选择题
Why is it possible to send large amounts of information at great speed
A．The invention of glass-fiber technology.
B．Economic links among nations.
C．The popularity of home computers.
D．The appearance of the cable television.
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