单项选择题

How long did it take Byrd and his colleagues to fly from Little America to the South Pole and back

A．19 hours.
B．17 hours.
C．18 hours.
D．16 hours.
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单项选择题
What is the man's opinion of taking a bath during a thunderstorm
A．He doesn't think it's a good idea.
B．He thinks a shower would be better.
C．He believes that lightning strikes clean surfaces.
D．He thinks it would be a waste of water.
单项选择题
What is the woman going to do if she's caught out in a thunderstorm
A．Stand under a tall tree.
B．Immerse herself in water.
C．Look for a closed cafe or building.
D．Remain in constant motion.
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