The biggest whale is ________ blue whale，which grows to be about 29 meters long—the height of ________ 9-storeyed building.

Since you are in a hurry, why not_______ for a taxi_______ stay here to wait for the bus?

Are you angry? —Yes. He should at least answer when ____. [ ]

mous scientist, _______ a dinner party will be heldtonight,is to arrive soon.

依次填入下面一段文字横线处的语句，前后衔接最为恰当的一句是(　　)作为人民币的重要防伪标志，2015年版第五套人民币100元纸币设计了两条安全线。其中，光变镂空开窗安全线线宽4毫米，其光变性能对光源要求不高，颜色变化明显，集成镂空文字特征，更有利于公众识别。磁性全埋安全线采用了特殊磁性材料和先进技术，机读性能更好。中国人民银行表示，______________，也有利于防止变造人民币。