山西河津铝厂:the highest building or the tallest bbuilding 是正确的

Why is the library the highest building? the highest building or the tallest bbuilding 是正确的 1.Why is library the highest building?2.which can move faster,heat or cold? Which one of the following materials has the highest hardness? Which of the following is fired at the highest temperatures? he lives in ( )A,building second B,building two C,the building two Dbuilding the second what the highest number of goals in a soccer career? main building styles around the world Which mountain is the highest in the world? Where is it ? How high is it? Which one of the following materials has the highest modulus of elasticity?