Higher temperatures turning the large ice sheet to water would cause rise in sea level wo

Higher temperatures turning the large ice sheet to water would cause rise in sea level worldwide and change weather on earth.
A. a; /
B. the; /
C. a; the
D. /; the

A. a; /B. the; /(答案→)C. a; theD. /; the解析：考察冠词。句意：更高的温度让大面积的冰面转变成水，会导致世界范围内的海平面上升，改变地球上的气候。结合语境 可知前文泛指任何一次海平面上升，故用不定冠词。下文特指地球上的气候，故用定冠词。选C。

我也是这个答案