单项选择题

But from the start of their experiments, the Wright brothers found that they needed money to pay ______ their research.

A．back
B．down
C．for
D．off
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单项选择题
Talking to foreigners is fun if you ______ the right time and place.
A．locate
B．consider
C．choose
D．decide
单项选择题
Japan is still ______ on Middle Eastern oil.
A．reliable
B．imposing
C．dependent
D．independent
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