单项选择题

Though eight years have passed. I still remember（）to Mr. Ma during my visit there.

A．introducing
B．being introduced
C．to be introduced
D．introduced

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（）知识产权法（）宪法
单项选择题
In the author’s view, some languages fall behind western languages in the aspect of（）

A．their sound pattern
B．their grammatical structures
C．their vocabularies
D．their speakers
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