单项选择题

Mercury orbits the Sun in 88 Earth days at an average speed of 48 kilometres per second, allowing it to overtake Earth every 116 Earth days.

A．precipitate
B．stimulate
C．overhaul
D．rotate
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单项选择题
Disabled people are now able to care for many of their own needs, ______ educational goals, and maintain jobs.
A．attempt
B．pursue
C．realize
D．perform
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