____________they are invented to be very smart, robots still can’t replace humans.
A、If only
B、Even though
C、As if
D、Just as
A、If only
B、Even though
C、As if
D、Just as
The island "Celtic" identity was invented in the 18th century.
A.Y
B.N
C.NG
By the end of this century intelligent robot ______ to do most of the housework for man.
A.is expected to be invented
B.will have been expected to be invented
C.has been expected to be invented
D.is expected to have been invented
The word "slums" was invented to describe ______.
A.bad housing
B.poverty
C.unemployment
D.wealth
She invented a _____ that automatically closes windows when it rains.
A.advice
B.derive
C.supervise
D.device
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