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  • 科目:英语
  • 题型:单选题
  • 难度:中等
  • 人气:1415
题文

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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Itisbelievedthatpartoftheanima