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()with the developed countries, some African countriesare left far behind in terms of people' s living standard.
A.Compare
B.To compare
C.Compared
D.Comparing
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A.Compare
B.To compare
C.Compared
D.Comparing
The fifth generation computers, with artificial intelligence, and perfected now.
A.developed
B.have developed
C.are being developed
D.will have been developed
A.developing;worse
B.developing;better
C.developed;worse
D.developed;better
The computer will soon affect ______.
A.people in large cities
B.people in developed countries
C.all humanity
D.the Western world
Modern industry must have developed ______.
A.before the Middle Ages
B.around the 19th century
C.in Greece or Rome
D.machines to take tests
Copernicus developed his theory______.
A.using various telescopes
B.based on Aristotle's beliefs
C.through observations and reasoning
D.under the encouragement of his friends
They have developed techniques which are ______ to those used in most factories.
A.simpler
B.better
C.superior
D.greater