A：均可以导电
B：均可以和氧气反应
C：均可以和稀盐酸反应
D：铁能与硫酸铜溶液的溶质发生置换反应
英国学者安德鲁•波特说：“当英国人从陶醉中惊醒，猛然看见帝国上空的夕阳时，新的太阳已经在大西洋另一端的美洲大陆上升起。那将是世界大国命运的又一次兴衰消长。”引起 “又一次兴衰消长”的主要原因是（ ）
用方框中所给单词的适当形式填空，使短文通顺、正确、连贯（每个单词限用一次）。
hair, never, old, newspaper, play, but, can't, get, glasses, build
My grandfather is seventy years old, ____ he is still very healthy. He is tall and of medium ____ . He has short straight white ____ He likes reading. Every morning he ____ up very early and then reads morning ____ . When he reads, he always wears ____ . He also likes ____ chess, too. He always plays chess with his ____ friends. He ____ plays chess with me. Why? Because I ____ play chess.
