In the Great Depression, the American government couldn’t find good solutions _____ the unemployment problem
A．of B．to C．on D．about
In January, 2004, the United States successfully launched “Spirit”, a Mars Exploration Rover, _____ a new milestone in the history of mankind．
A．it marked B．marking C．marked D．to mark
I spent five hours_____________ the book__________ I paid 10 dollars．
A．reading; that B．to read; for that C．read; which D．reading; for which
With five hungry children seated round the table, the food disappeared_____________．
A．on time B．in time
C．at no time D．in no time
—You haven’t been to Beijing, have you?
—______________．How I wish to go there!
A．Yes, I have B．Yes, I haven’t C．No, I have D．No, I haven’t
根据以下内容写一篇5句话说明文，标题为“Australia”。
1)、澳大利亚位于太平洋的西侧，是大洋洲（Oceania）最大的国家，面积760万平方公里。
2)、人口稀少，只有1，000多万，多数集中在东部沿海地区。
3)、首都堪培拉（Canberra）风景秀丽。
4)、悉尼（Sydney）是澳大利亚最大城市。有许多名胜，其中悉尼歌剧院（Opera House）闻名于世。2000年奥运会就是在悉尼举行的。
