1.The Earth's Atmosphere
2.Is El Nino Back?
3.Wildlife Conservation
4.Pets
5.William H.Gates Ⅲ
6.Alan Greenspan
7.To Face the Music
8.Rats Have Head for Language
9.A Mistaken Rapture
10.The Danger of Green Grass Snakes
11.London of Paris
12.Home on the Road
13.Faith and Miracle
14.Lie-Detector Camera Looks into Your Eyes
15.Rovers on Mars
16.The Bermuda Triang le
17.Wal-Mart's Rise
18.InterraciaI Marriages
19.The Communicativ Style of Americans
20.What Does It Mean to Be a Living Thing?
ANSWER KEYS
