CNN news 2011-05-01 加文本

词汇讲解：

1. alert n. 警报
例句：We should stand by on a hurricane alert . 
在暴风雨警戒期间我们应加戒备。 

2. levee n. 堤岸
例句：Crews are rushing to build a four -foot -tall levee around an eastern Missouri community .
工作人员急着在密苏里东部地区建造一座四英寸高的堤坝。

3. barrier n. 屏障，障碍物
例句：The horse took the barrier easily.
那匹马轻松地越过了障碍。

4. evacuation n. 撤离，疏散
例句：There were more evacuations in Missouri where levees have been topped by rising flood waters. 
在密苏里州，因洪水泛滥许多防洪堤被水覆盖了，越来越多的居民都搬迁了。

5. tremendous adj. 极大地，巨大的
例句：The response to our appeal was tremendous.
对我们呼吁的反应极大。

6. reinforce vt. 增强，加强，加固
例句：They reinforced a coat by sewing pieces of leather on the elbows.
他们在外衣肘上缝皮革使衣服更耐穿。

7. thunderstorm n. 雷暴
例句：Thunderstorm is common in summer.
雷暴在夏天很常见。

8. tear v. 撕，扯
例句：I tore my coat this morning.
今天早上我把上衣撕破了。

9. relief n. (痛苦等)缓解，减轻，解除
例句：They send relief to those who made homeless by floods.
他们给水灾中无家可归的人发送救援物资。

10. governor n. 统治者， 管辖者，地方长官；州长；省长
例句：He was elected governor of the state of California.
他当选为加州州长。