It was a Monday morning. When a teacher walked into the1, he heard a low voice: “Here is the teacher. I am 2this boring fellow(烦人的家伙) is going to talk about putting in commas(逗号).” It was a boy's3. His name was Bill. He was talking4the boy next to him. The teacher didn't get angry. He said5about it, then he really began to talk about putting in commas, and then he wrote6the sentence: “Bill says the teacher is a boring fellow.” The class7and Bill's face8red. “Now,” said the teacher, “I'll 9you how important commas are.”

    He put two commas in the sentence, and now read, “10is a boring fellow.”

①吸取和滴加少量液体时，需要用____；

②用排水法收集气体时，需要用____、____；

③给物质加热时，需要用____；

④量取一定量体积的液体时，需要用____；

⑤能加热的仪器是____；能直接加热的仪器是____；加热时，应用火焰的____部分加热．

《荷马史诗》、《战争与和平》、《红楼梦》这三部文学作品在史学上的共同价值是（    ）