单项选择题

The __________ populated big cities are facing worsening environmental problems.

A．densely
B．abundantly
C．highly
D．intensely
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单项选择题
We all __________ our tone when speaking to people in authority.
A．notify
B．glorify
C．clarify
D．modify
单项选择题
The strike is going on as both the management and workers are__________.
A．incompatible
B．indispensable
C．inflexible
D．indefensible
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