阅读理解1

Hurricane Katrina

A hurricane is a fiercely powerful,rotating form of tropical storm that can be 124 to l , 240 miles in diameter. The term hurricane is derived from Hurican, the name of a native American storm god. Hurricanes are typical of a calm central region of low pressure between 12 to 60 miles in diameter, known as the eye. They occur in tropical regions. Over its lifetime,one of these storms can release as much energy as 10000 nuclear bombs.

The seed for hurricane formation is a cluster of thunderstorms over warm tropical waters. Hurricanes can only form and be fed when the sea-surface temperature exceeds 27℃and the surrounding atmosphere is calm. These requirements are met between June and November in the northern hemisphere.

Under these conditions, large quantities of water evaporate and condense into clouds and rain - releasing haet in the process. It is this heat energy, combined with the rotation of the Earth, that drives a hurricane.

When the warm column of air from the sea surface first begins to rise, It causes an area of low pressure. This in turn creates wind as air is drawn into the area. This spinning wind drags up more moisture-laden air from the sea surface in a process that swells the storm. Cold air falls back to the ocean surface through the eye and on the outside of the storm.

Initially, when wind speeds reach 23 miles per hour, these mild, wet and grey weather systems are known as depressions. Hurricane Katrina formed in this way over the south-eastern Bahamas on 23 August 2005. Katrina has had a devastating impact on the Gulf Coast of the US, leaving a disaster zone of 90000 square miles in its wake – almost the size of the UK. Thousands have been killed or injured and more than half a million people have been displaced in a humanitarian crisis of a scale not seen in the US since the great depression. The cost of the damage may top $ 100billio

卡特里娜飓风

一个飓风一个激烈强大，轮流用热带风暴构成那能124半导体技术天地，240英里在直径。术语飓风被来自胡日参，刑名一个印第安人风暴神。飓风典型的一个和平低压的中部地区在12之间60英里在直径，被称为眼睛。他们发生在热带的地区。以上它的寿命，之一这些风暴能释放同样的或同样多少的能源由于10000核弹。

种子为飓风编队一群雷雨以上温暖热带的水。飓风能只有表格，被饲料当sea-surface 温度超过27℃，镶边气氛是和平。这些意思是达到要求在六月之间，十一月在北半球。

下这些条件，大水量蒸发，凝结成云和雨-释放亥在这个过程中。它是这个热能，结合地球的自转，那个驱动器一个飓风。

当空气的热烈栏从海面第一开始上升，它事业一个低压区。这反过来创建风由于空气被吸引到罚球区。这么纺风向上拉更多潮湿的空气从海面在一个过程如此漂亮的风暴。冷空气撤退海洋表面通的眼睛，在表面的风暴。

最初，当风速度到达23英里每小时，这些温和，湿气和灰色天气系统被被称为萧条。卡特里娜飓风形成用这种方法以上东南部巴哈马在23八月2005。卡特里娜有了一个蹂躏影响在的墨西哥湾海岸我们，离开一个90000的灾区平方英里在它的痕迹?c源文件几乎大小的英国。千被杀死了或伤害，超过半数以上一个万人已经是替换在一个一个规模的人道主义危机不见在我们以来大萧条。成本的毁损可能顶部$100billion。

练习：

1.What is the eye of a hurricane?( 什么是眼睛的一个飓风)

A A native American storm god.( 一个印第安人风暴神)

B A rotating from of tropical storm that can be 124 to 1240 miles in diameter.

(一个轮流从的热带风暴那能1241240英里在直径)

C A calm central region of low pressure between 12 to 60 miles in diameter.

(一个和平低压的中部地区在12之间60英里在直径)

D A storm that can release as much energy as 10000 nuclear bombs.

(一个风暴那可以释放同样的或同样多少的能源由于10000核弹)

2. Which of the following statements is NOT meant by the writer?

(下面的声明不是意味着附近的的作家)

A The tropical waters are warm and calm.

(热带水暖和，平静)

B The sea-surface temperature exceeds 27℃.

(sea-surface温度超过27℃)

C There are thunderstorms over warm tropical waters.

(有雷雨过温暖热带的水)

D The atmosphere surrounding the sea is calm.

(气氛周围海面风平浪静)

3. Which of the following is the best explanation of the word “drive”in the third

paragraph?( 下面的最好的字的解释“开”段)

A To guide, control,or direct.( 指导，控制，或直接)

B To force to go through or push in .( 武力经过或推入)

C To supply the motive force or power and cause to function.

( 提供原动力或权力和事业功能)

D To force to move in a particular direction.

(武力向内投一个特别方向)

4. What does the warm air mentioned in the fourth paragraph produce when it is rising from the sea surface?( 什么欺诈温空气提到在第四段生产当它在上升从海面)

A High pressure. (高压)

B Low pressure.(低压)

C Wind.（风）

D Cold air.（冷空气）