单项选择题

In some speech community, two languages are used side by side with each having a different role to play, this is __________.

A．pidgin
B．creole
C．diglossia
D．bilingualism
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单项选择题
We may hear children say what he wants . This is an example of __________.
A．interference
B．transformation
C．overgeneralization
D．over-extension
单项选择题
According to the writer which of the following is put of chivalry A knight should ________.
A．inspire his lady to perform valiant deeds
B．perform deeds which would inspire romantic songs
C．express his love for his lady from a distance
D．regard his lady as strong and independent
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