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
On March14, 2013, Xi Jinping was elected_______ president of _______ People’s Republic of China.
#8353
A
a; the
B
/; /
C
/; the
D
the; the
---Have you seen _____ Audi car? I parked it here two hours ago, but now it’s gone!---Is it _____ black one? A young man has just driven a black car away.
#8138
A
an…a
B
the…the
C
the… a
D
an…the
If you want to make _____ life for yourself, you have to be prepared to face _____ great many unexpected difficulties.
#8479
A
/ ; a
B
/ ; the
C
a ; the
D
a ; a
Recognized as ________ world cultural heritage by the United Nations in 2002, paper cutting is ________ practice which originated in ancient China.
#9365
A
the; a
B
a; a
C
the; the
D
a; the
This book tells life story of John Smith, who left school and worked for a newspaper at the age of l6.
#9164
A
the；the
B
a；the
C
the；不填
D
a；不填