．Jack was still very calm, ______ the quarrel with the boss, and greeted every person he met on the way back to his office.
#27661
A
in spite of
B
due to
C
as a result of
D
because of
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______giving a general introduction to computer, the course also provides practical experience.
#29198
A
In exchange for
B
Except for
C
In addition to
D
Due to
Since no one really knows what effects the GM food might have _____ us humans, many countries think that they should be cautious _____ this new technology.
#26140
A
about; with
B
on; to
C
in; to
D
on; with
To reach Africa, we flew high mountains, deep valleys and great deserts(沙漠).
#26301
A
on, across, though
B
over, through, through
C
over, through, across
D
on, in, across