单项选择题

A．said
B．told
C．talked
D．spoken
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单项选择题
A．formalB．colloquialC．non-standardD．standard
A．formal
B．colloquial
C．non-standard
D．standard
填空题
In many parts of the world, large numbers of trees ______ (遭到砍伐) and the eco logical balance of nature has been disturbed.
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