单项选择题

A．Iron from old ships.
B．The bones and teeth of whales.
C．Wood found floating in the ocean.
D．Seashells of unusual shapes and colors.
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单项选择题
A．Television has been very effective in spreading news.B．Vietnam War was the first live broadcast of TV.C．Television can even change the way a government acts.D．Television did more to end the Vietnam War than radio.
A．Television has been very effective in spreading news.
B．Vietnam War was the first live broadcast of TV.
C．Television can even change the way a government acts.
D．Television did more to end the Vietnam War than radio.
单项选择题
A．The course may not be so good now.B．Prof. Paulson has retired.C．The course is definitely worthwhile.D．The course is even more interesting now.
A．The course may not be so good now.
B．Prof. Paulson has retired.
C．The course is definitely worthwhile.
D．The course is even more interesting now.
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