问题
选择题
It is believed that part of animals can’t stay alive in water at 1,500 meters below ____
sea level.
A．不填；不填
B．a; a
C．the; the
D．不填; the
答案
答案：A
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It is believed that part of animals can’t stay alive in water at 1,500 meters below ____
sea level.
A．不填；不填
B．a; a
C．the; the
D．不填; the
答案：A
力是指（）