单项选择题

While others sat at home studying papers on the subject, Jefferson got into a boat and made ______observations.

A．of-the-spot
B．in-the-spot
C．at-the-spot
D．on-the-spot
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单项选择题
The synthetic functions of the human, (such as) imagining, visualizing, and dreaming, (is) (largely) associated (with) the right half of the brain.
A．such as
B．is
C．largely
D．with
单项选择题
Splendid ______ the architecture of Manhattan with its one hundred and more skyscrapers.
A．is
B．are
C．do
D．does
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