下列描述表示相对高度的是   (      )  A.学校教学楼高20米

下列描述表示相对高度的是          

A.学校教学楼高20           B.死海-400

C.珠穆朗玛峰8844.43米       D.吐鲁番盆地-155

答案

A

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