I don’t think the experiment is ______ failure, because it has provided us with _____ valuable experience for our future tests.
#9818
A
不填; 不填
B
a; 不填
C
a ; a
D
不填; a
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____73-year-old woman, who died of respiratory failure on Dec. 6, was confirmed to have been carrying ____H10N8 virus.
#8057
A
A, the
B
The, the
C
A, \
D
The, a
While other scientists are keeping____eye on changes in the H5N1 bird flu strain, the scientists in England are working on vaccines, in case it becomes highly infectious in ____humans.
#9824
A
a , /
B
an, /
C
the, an
D
an, the
Shanghai is most beautiful city and we are excited that the 2010 World Expo has been great success.
#9662
A
a; a
B
the; a
C
a; the
D
the; the
After the warmingup exercises, the teacher told us ________way of long jump and gave us________example.
#7645
A
the；a
B
/；an
C
the；an
D
a；a
The accident is ________ reminder of the potential dangers involved in ________ oil production in this area.
#8390
A
a; the
B
the; /
C
the; the
D
/; a