Polar bears live mostly on __________ sea ice, which they use as __________ platform for hunting seals.
#10169
A
a; a
B
a; the
C
不填; a
D
the; 不填
推荐题目
As is known to all, _____USA is _____ biggest developed country in the world.
#9206
A
the; 不填
B
不填; the
C
the; the
D
不填; 不填
---How about New Year evening party? ---I should say it was big success.
#8218
A
a; a
B
the; a
C
a; 不填
D
the; 不填
It was _____ great shock to the world that two airplanes crashed into _____ World Trade Centre in New York on Sept．11．
#10087
A
a；／
B
the；the
C
a；the
D
／；the
What________pity that he couldn't be here to receive________prize.
#7650
A
a；a
B
the；a
C
a；the
D
the；the
I love _____ history because it gives us _____ knowledge of past event.
#9860
A
the, a
B
/ , a
C
/ , /
D
a, the