单项选择题

______ the 1500's ______ the first European explored the coast of California.

A．It was not until/then
B．It is until/that
C．It is not until/when
D．It was not until/that
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单项选择题
The news item about the fire is followed by a detailed report made ______.
A．on the spot
B．on the site
C．on the location
D．on the ground
单项选择题
To be an inventor, one needs profound knowledge as well as a very ______ imagination.
A．vivid
B．bright
C．living
D．colorful
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