单项选择题

After seven years’work, Chinese scientists ________ the task of launching their country's first spaceship in seven years.

A．achieve
B．accomplish
C．fulfill
D．complete
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My parents died young, but I have done well in this respect ________ my other ancestors.
A．to
B．for
C．as regards
D．with
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In spite of all effort the doctors had done, her burns refuse to ________.
A．heal
B．revive
C．recover
D．survive
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