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
推荐题目
___ the help of computers , there are no ___ problems.
#26921
A
Under; so
B
Under; many
C
With ;such
D
With ;some
This exam is very difficult. Many students are concerned ________the results.
#25680
A
about
B
with
C
in
D
of
_____ sports teams, group work can only be successful when group members respect, help and support each other．
#28161
A
As for
B
As to
C
As with
D
As of
All the athletes competed _____ each other for gold medals in the Olympic Games.
#26017
A
against
B
for
C
between
D
over