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
Mar Levine, ____ scientist at University of Pennsylvania, US, has found that competitive eaters have stomachs that can expand like ____ balloon.
#9096
A
a; a
B
a; the
C
a; /
D
the; a
________ walk is expected to last all day, so bring ________ packed lunch.
#7832
A
A; a
B
The; /
C
The; a
D
A; /
Mary couldn’t remember when she first met Mr. Anderson, but she was sure it was _____ Sunday because everybody was at _______ church.
#9457
A
/;the
B
the;/
C
a;/
D
/;a
During _________ 3-day conference, global warming became _________ major concern of all the representatives.
#9505
A
the; a
B
a; the
C
the; \
D
a; \
Take your time . It’s just ________ short distance from here to ________ restaurant.
#9074
A
不填; the
B
a; the
C
the; a
D
不填; a