The radiation of uranium was then regarded as_____secret of_____nature.
#10089
A
a;the
B
a;a
C
the;the
D
a;/
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—Would you mind giving your advice on how to improve our business management?—If you make ________ most of the modern equipment, there will be ________ rise in production.
#7820
A
不填；不填
B
the; a
C
不填；a
D
the；不填
This area experienced ______ heaviest rainfall in ______ month of May.
#9078
A
a; a
B
a; the
C
the; the
D
the; a
. If a teacher gives a student _______ hearty smile, the student will treat the teacher as _______ agony aunt.
#9893
A
The; the
B
不填; an
C
不填; the
D
a; an
—Beijing experienced _____ heaviest snowfall in ____ month of January .
#9024
A
\ ; a
B
a ; the
C
the ; the
D
the ; a