单项选择题

A．A new record.
B．An old record.
C．A popular record.
D．A record of classical music.
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单项选择题
A．Light speed is millions of times faster than sound speed.B．Light speed is a million times slower than sound speed.C．Light speed is about millions of times faster than sound speed.D．Light speed is about a million times faster than sound speed.
A．Light speed is millions of times faster than sound speed.
B．Light speed is a million times slower than sound speed.
C．Light speed is about millions of times faster than sound speed.
D．Light speed is about a million times faster than sound speed.
单项选择题
A．Sad.B．Relieved.C．Sarcastic.D．Apologetic.
A．Sad.
B．Relieved.
C．Sarcastic.
D．Apologetic.
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