A.are based on
B.is based on
C.are the basis of
D.is the basis of
His courage and confidence were based ______ knowledge.
A.of
B.to
C.on
D.for
Communication games are based on the principle of information gap.()
Theory is based on practice and ______ serves practice.
A.in return
B.in consequence
C.in order
D.in exchange
The horror stories are based on ______.
A.Gothic fiction
B.tales of evil
C.love story
D.both A and B
Many of Shakespeare's plays______.
A.were based on original stories
B.were based on stories already familiar to the audience
C.were a mixture of comedy and tragedy
D.do not exist today
The open-source movement is based on the idea that
A.counterculture is important.
B.everyone can contribute in creating better software.
C.experts can improve a software.
D.it can be a challenge to the conventions.