单项选择题

A．Big waves pose a threat to commercial navigation.
B．The river current never flows faster ten miles per hour.
C．The river reverses its flow several times a day.
D．High tides can create sudden and unexpected rapids.
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单项选择题
A．Because men are less likely to be well armed when they bend.B．Because men seem more obedient when they bend.C．Because men more closely resembles a medium-sized deer when they bend.D．Because men are cutting grass when they bend.
A．Because men are less likely to be well armed when they bend.
B．Because men seem more obedient when they bend.
C．Because men more closely resembles a medium-sized deer when they bend.
D．Because men are cutting grass when they bend.
单项选择题
A．Go to a fast food place with the man.B．Eat after her class.C．Join some friends for a quick meal.D．Get to her class early.
A．Go to a fast food place with the man.
B．Eat after her class.
C．Join some friends for a quick meal.
D．Get to her class early.
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