单项选择题

What does the passage say about accidents

A．Accidents are unavoidable.
B．Accidents can be avoided.
C．Human beings are always careless.
D．There should be more precautions.
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单项选择题
What happened in 1981
A．A space programme was suspended.
B．Five men were injured during an accident.
C．An accident occurred before a rehearsal.
D．No accident happened that year.
单项选择题
What kind of cello did the man use. when he was eight
A．A half-sized cello.
B．A two-thirds-sized cello.
C．A full-sized cello.
D．An expert-made cello.
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