Ⅰ.阅读理解
A
You might think that“global warming”means nothing more than a rise in the world’s temperature.But，rising sea levels caused by it have resulted in the first evacuation(撤离)of an island nation—the citizens of Tuvalu will have to leave their homeland.
During the 20th century，sea level rose 8～12 inches.As a result，Tuvalu has experienced lowland flooding of salt water which has polluted the country’s drinking water.
