单项选择题

With all its advantages, the artificial intelligence is by no means without its ______.

A．boundaries
B．restraints
C．confinements
D．limitations
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单项选择题
My little brother has never been to Beijing, but it's the place ______.
A．Where he'd like to visit
B．he most wants to visit
C．in which he'd like to visit
D．that he wants to visit it most
单项选择题
There are some faults which men readily ______, but others not so readily.
A．acknowledge
B．admit
C．confess
D．concede
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