单项选择题

The great American scientist Edison had a remarkable ______ for inventing new things.

A．requirement
B．aptitude
C．obligation
D．vulnerability
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单项选择题
A respectable official will never ______ his principles in face of various pressure.
A．comprehend
B．complicate
C．comprise
D．compromise
单项选择题
As females in their 40s tend to ______ weight, they are to go in for outdoor activities.
A．take on
B．hold on
C．carry on
D．put on
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