Polar bears live mostly on_____ sea ice, which they use as ____platform for hunting seals.
A. a;a B.a;the C./;a D.the;/
Polar bears live mostly on_____ sea ice, which they use as ____platform for hunting seals.
A. a;a B.a;the C./;a D.the;/
C
本题考查冠词。on_____ sea ice处是不可数名词，表示泛指，不加冠词；as____platform处表示数量，相当于one。