单项选择题

The energy gained-from the sun can then be used during the night to enable the necessary chemical reactions to ______ in his body.

A．precede
B．proceed
C．progress
D．practice
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Caracas has been called the Los Angles of South America; at ______ they look exactly the same.
A．short notice
B．first sight
C．first impression
D．first appearance
单项选择题
We'd rather you ______ the account tomorrow.
A．settled
B．settle
C．would settle
D．will settle
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