Today is the last Saturday before Christmas. Everyone in the USA 1 shopping for presents. 2 is falling. People are walking fast. They are trying to keep3 when they move from shop to shop. In the shops children are 4 at the toys. They are talking to a man called Father Christmas. He asks, "What do you want for Christmas?"

    In the USA it is warm and beautiful in summer. The trees and fields are green then. But now it is winter and 5is white.

    At 6, small lights make the houses and buildings 7. Christmas is a beautiful 8 of a year.

    Christmas Day always begins before 9. Children wake up very early in the morning. They open the 10from their parents. Then they wake up their parents, saying "Merry Christmas."

写出近义词

恬静—____ 柔和—____ 迫不及待—____

金属汞在加热条件下可以与氧气化合生成氧化汞，反应如下：2Hg ＋O₂＝ 2HgO ，下列哪个选项可以说明0.2mol Hg 与0.2mol O₂充分反应后物质的种类及其量的情况？（  ）

写出图中北京、上海、重庆、拉萨、哪个城市先迎来黎明，请按先后顺序进行排列。