单项选择题


Passage Two
Questions 30 to 32 are based on the passage you have just heard.

A．It’s similar to playing notes on a piano.
B．It requires a night’s sleep.
C．It’s similar to the way a computer stores information.
D．It requires no sleep.
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单项选择题
A．Be unable to breathe.B．Be overcome by pressure.C．Become speechless.D．Be scared by pressure.
A．Be unable to breathe.
B．Be overcome by pressure.
C．Become speechless.
D．Be scared by pressure.
单项选择题
A．About four million.B．About seven million.C．About five million.D．About six million.
A．About four million.
B．About seven million.
C．About five million.
D．About six million.
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