It is believed that ____ part of the animals cannot stay alive in water at 1,500 meters below ___ sea level.
/; /
B a; a
C. the; the
D. /; the
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It is believed that ____ part of the animals cannot stay alive in water at 1,500 meters below ___ sea level.
/; /
B a; a
C. the; the
D. /; the