lasted for FIVE YEARS.

　　1．document v． 记录

　　2．respiratory system 呼吸系统

　　3．shock v. 使人震惊

　　4．hazy adj. 模糊的

　　5．displace v. 移走

　　6．undergo v. 遭受

　　Fill in the blanks according to the passage.

　　1．The sandstorm which happened in Australia, on September 22nd, 2009 lasted

days.

　　2．About people died after the sandstorm which happened in Pakistan, on July 4th，2007.

　　3．The wind of "The Dust Bowl" reached mph.

　　【答案】　1.seven　2.200　3.60

Section Ⅰ　Introduction & Reading and Vocabulary－Preparing

　　根据提示写出下列单词

　　1． adj. 吓人的；可怕的

　　2． adj. 大量的；大规模的

　　3． n. 战役；活动

　　4． n. 进程；过程

5． n. 公民；市民