单项选择题

It was felt that he lacked the ______ to pursue a difficult task to the very end.

A．engagement
B．persuasion
C．commitment
D．preservation
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单项选择题
The ______ of energy and money on the launching of the rocket is surprising.
A．exhaustion
B．expenditure
C．allowance
D．ownership
单项选择题
Some American colleges are state-supported, others are privately _______, and still others are supported by religious organizations.
A．ensured
B．attributed
C．authorized
D．endowed
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