单项选择题

A．time
B．speed
C．fuel
D．performance
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单项选择题
A．Nine out of ten cats have a better chance of survival.B．What is the significance of the seventh floorC．What’s the cats’ terminal speedD．Most cats can survive when falling.
A．Nine out of ten cats have a better chance of survival.
B．What is the significance of the seventh floor
C．What’s the cats’ terminal speed
D．Most cats can survive when falling.
单项选择题
A．Cats can change their position while falling.B．The force of impact with the ground over four legs is spread.C．Cats can land on their feet after falling.D．Their muscles can absorb more of the force of impact.
A．Cats can change their position while falling.
B．The force of impact with the ground over four legs is spread.
C．Cats can land on their feet after falling.
D．Their muscles can absorb more of the force of impact.
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