单项选择题

The suggested plan was to ______.

A．turn on all lights
B．mm off all electricity for a short time
C．shut off the fights in cities
D．dim all lights
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单项选择题
People decided to honor Edison when ______.
A．he made his electric light
B．the first invention was made
C．he died more than 70 years ago
D．the country realized the importance of electricity
单项选择题
What does “dim” (Line 1, Para. 3 ) mean
A．To make less bright.
B．To make more bright.
C．To mm on.
D．To mm off.
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