单项选择题

There are no solitary, free-living creature; every form of life is ______ other form.

A．parallel to
B．dependent on
C．segregated from
D．overlapped with
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单项选择题
There is a direct flight at 3: 00 or a flight at 7: 30 in the morning that ______ in Los Angeles.
A．stops by
B．stops in
C．stops over
D．stops up
单项选择题
The technology exists to complement and______ the human mind.
A．amplify
B．enrich
C．stretch
D．enhance
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