单项选择题

A．Two years.
B．Three years.
C．Four years.
D．Two to four years.
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单项选择题
A．On TV.B．On the Internet.C．In the newspaper.D．On radio.
A．On TV.
B．On the Internet.
C．In the newspaper.
D．On radio.
单项选择题
A．Check the figures later today.B．Do the calculations again tomorrow.C．Bring a calculator tomorrow.D．Calculate the number right now.
A．Check the figures later today.
B．Do the calculations again tomorrow.
C．Bring a calculator tomorrow.
D．Calculate the number right now.
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