I don't think the experiment is ___ failure, because it has provided us with ___valuable experience for our future tests．
#8306
A
不填; 不填
B
不填; a
C
a; 不填
D
a; a
推荐题目
______Olympic torch has reportedly stayed alight throughout _____varied extreme weather conditions in a German testing center.
#9101
A
不填; the
B
The; 不填
C
不填; an
D
The; a
Experts think that _________ recently discovered painting may be_________ Picasso.
#7705
A
the; a
B
a; the
C
a; /
D
the; /
(2014·温州质检)It is________tradition for people in this country to pay in________cash when buying things.
#7625
A
the；/
B
a；/
C
；/the
D
a；the
_________ development of nuclear weapons is _________ threat to mankind.
#9210
A
The; a
B
The; the
C
A; a
D
A; the
We were caught in________ heavy rain but afterwards we enjoyed_________ bluer and cleaner sky.
#8624
A
a, the
B
不填; the
C
a, a
D
不填; the