单项选择题


A．were controlled
B．were stored
C．were copied
D．were examined
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单项选择题
A．formerB．originalC．recordsD．material
A．former
B．original
C．records
D．material
单项选择题
A．goingB．datingC．looking atD．dated
A．going
B．dating
C．looking at
D．dated
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