People develop______ preference for a particular style of learning at______ early age and these preferences affect learning.
#8420
A
a; an
B
a;不填
C
不填;the
D
the ;an
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．—Really ? Who will give ____lecture ? What is it about ?—Professor Chen , ____president of Beijing University . About pollution .
#10102
A
the ;a
B
the;/
C
a ; the
D
a ;/
Recently people have made great progress in using ____ power of nature to produce____ electricity.
#8387
A
a; the
B
/; /
C
the; /
D
a; an
Many experts seem to agree that certain limit should be set on consumption of cars to ease air pollution.
#8463
A
a; the
B
/; the
C
the; /
D
the; a
As a businessman he was a success, but as a husband he was ______failure, so their marriage ended in______ failure.
#9063
A
/; /
B
/; a
C
a; a
D
a; /