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
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(2013·豫北三校联考)Friendship is both ________ source of pleasure and ________ component of good health.
#7940
A
a; a
B
/; /
C
the; a
D
a; the
Shirley Temple has passed away at age of 85, who found fame in movies during Great Depression.
#7714
A
an; the
B
the; /
C
the; the
D
/; the
---Do you know ____ boy who can play ______ violin?---Yeah! He is ___ artist. He also plays ___ football very well.
#7593
A
a; a; the; /
B
The; a; a; the
C
the; the; an; /
D
The; an; a; /
The driver was at ______ loss when ______ word came that he was forbidden to drive for speeding.
#7734
A
the ; the
B
a ; /
C
/; /
D
a ; the
It was a______ that he was born on his mother’s birthday.
#9274
A
fact
B
satisfaction
C
coincidence
D
experience