单项选择题


Section A

A．$2.75.
B．$1.25.
C．$1.50.
D．$3.9.
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单项选择题
A．It’s dull.B．It’s exciting.C．It’s simple.D．It’s complicated.
A．It’s dull.
B．It’s exciting.
C．It’s simple.
D．It’s complicated.
单项选择题
Who used the term Singularity to refer to the era when human beings are replaced
A．A mathematician.
B．A computer scientist.
C．A science-fiction writer.
D．A computer entrepreneur.
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