单项选择题


A．indication
B．sign
C．symbol
D．reference
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单项选择题
A．noB．notC．neitherD．none
A．no
B．not
C．neither
D．none
单项选择题
A．called asB．that isC．named asD．known as
A．called as
B．that is
C．named as
D．known as
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