105The waters of this great lake, which is also the world’s deepest, have been ____ by waste from a chemical factory

s the matter with Della— Well, herparents wouldn’t allow her to go to the party, but she still __

Besides the content of a book, ________ the editor also cares about is the number of readers

____ is the population of your city– About seven ____.

依次填入下面一段文字横线处的语句，衔接最恰当的一组是（ ）在世界各国建筑史上，石质材料都有广泛而久远的应用。________，________，________，________。________，________。石质文物的形式丰富多样，我国著名的四大石窟均被列入世界文化遗产名录。①成为研究历史的重要文物 ②承载着丰富的历史信息③完好保存至今的古建筑多为石质 ④石质文物占有极其重要的地位⑤它们经历久远的历史年代 ⑥在我国历史文化遗产中