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A．in the way
B．out of hand
C．at hand
D．by the way
答案
更多“When a hurricane is about to occur, warning is usually given by the weather bureau. The un”相关的问题
第1题
A．Y
B．N
C．NG
第2题
When the warm air from the sea surface begins to rise, it ______.
A．creates an area of low pressure
B．supplies cold air to the eye of a hurricane
C．increases the sea-surface temperature
D．strengthens the rotation of the earth
第3题
When the warm air from the sea surface begins to rise, it______.
A．creates an area of low pressure
B．supplies cold air to the eye of a hurricane
C．increases the sea-surface temperature
D．strengthens the rotation of the earth
第4题
Hurricane(飓风)Katrina A hurricane is a fiercely powerful,rotating(旋转的)form. of tropical storm that can be 124 to 1,240 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 can release as much energy as 10,000 nuclear bombs.
The seed for hurricane formation is a cluster(聚集)of thunderstoms 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 part of the world.
Under these conditions,large quantities of water evaporate(蒸发)and condense(冷凝)into clouds and rain-releasing heat 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 moist air from the sea surface in a process that strengthens 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,or low air pressure.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 90,000 square miles in its wake(尾迹)-almost the size of the UK.Thousands have been killed or injured and more than half a million people have become homeless in a humanitarian(人道主义的)crisis of a scale not seen in the US since the Great Depression.The cost of the damage may top $100 billion.
第6题：The eye of a hurricane refers to its
A．lower part.
B．rotating part.
C．calm central part.
D．most violent part.
第5题
Hurricane(飓风)Katrina
A hurricane is a fiercely powerful, rotating(旋转的)form. of tropical storm that can be 124 to 1,240 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 can release as much energy as 10, 000 nuclear bombs.
The seed for hurricane formation is a cluster(聚集)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 part of the world.
Under these conditions, large quantities of water evaporate(蒸发)and condense(冷凝)into clouds and rain-releasing heat 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 moist air from the sea surface in a process that strengthens 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, or low air pressure. 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 90, 000 square miles in its wake(尾迹)-almost the size of the UK. Thousands have been killed or injured and more than half a million people have become homeless in a humanitarian(人道主义的)crisis of a scale not seen in the US since the Great Depression. The cost of the damage may top $100 billion.
The eye of a hurricane refers to its
A．lower part.
B．rotating part.
C．calm central part.
D．most violent part.
第6题
Hurricane (飓风) Katrina
A hurricane is a fiercely powerful, rotating(旋转的)form. of tropical storm that can be 124 to 1,240 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 can release as much energy as 10,000 nuclear bombs.
The seed for hurricane formation is a cluster(聚集) of thunderstorm 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 part of the world.
Under these conditions, large quantities of water evaporate (蒸发) and condense (冷凝) into clouds and rain-releasing heat 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 moist air from the sea surface in a process that strengthens 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, or low air pressure. Hurricane Katrina formed in this way over the southeastern Bahamas on 23 August 2005, Katrina has had a devastating impact on the Gulf Coast of the US, leaving a disaster zone of 90,000 square miles in its wake(尾迹)-almost the size of the UK. Thousands have been killed or injured and more than half a million people have become homeless in a humanitarian(人道主义的) crisis of a scale not seen in the US since the Great Depression. The cost of the damage may top $100 billion.
The eye of a hurricane refers to its ______.
A．lower part
B．rotating part
C．calm central part
D．most violent part
第7题
What Are Tropical Storms？
Severe storms spawned in the tropics are known by different names in different parts of the world: hurricanes in the Atlantic and east Pacific and typhoons in the northwest Pacific and cyclones in the southwest Pacific and Indian Ocean. These storms originate over tropical waters, close to the equator. If the atmosphere is calm and the water is warmer than about 27℃, evaporation forces large amounts of moisture into the air, creating a low-pressure system. When this water vapor condenses, it releases heat that powers the circular winds that characterize these storms.
Rainfall in the developing storm releases more heat, triggering a convection process that pulls more moisture-laden air up through the centre of the system. The storm grows via this feedback mechanism. The strongest winds are found immediately outside the centre, or "eye", of the hurricane at ground level.
Every one of these systems begins as a tropical depression—a system of thunderstorms with an overall circular motion and maximum sustained winds less than 62 km/h. When a storm becomes severe enough and the winds pick up to more than 62 km/h, it is designated a tropical storm. When the winds reach 119 km/h, the system is called a hurricane, typhoon or cyclone.
An average of 10 tropical storms develop over the Atlantic Ocean each year, of which about six become severe enough to be called hurricanes. Besides strong winds and heavy rain, these hurricanes also create a "storm surge", a massive wave beneath the centre of the storm. In the eye of the hurricane, air is sucked upward faster than it can rush in at the bottom. This lowers the atmospheric pressure under the eye of the storm; as a result, the eye tries to pull at the ocean itself, creating a bulge of water as much as six metres high that moves together with the storm.
When is the hurricane season？
Hurricane season officially runs from June I to November 30, but the most intense storms mainly occur between mid-August and mid-October.
How are hurricanes classified？
Tropical storms that get strong enough to be classified as hurricanes are categorized by the intensity of their wind speeds using the Saffir-Simpson scale. Only three Category 5 hurricanes have made landfall in the U.S. in the past century—one that struck the Florida Keys in 1935, Hurricane Camille in 1969, and Hurricane Andrew in 1992. How are tropical storms named？
A tropical storm is given a name if its winds reach a speed of 62 kilometres per hour. An international committee has drawn up a list of 126 names—half male and half female—which are repeated after a six-year cycle. However, if a hurricane causes extensive damage, its name is retired from use. So far, more than 50 names have been retired, from Hazel in 1954 to Juan in 2003.
Memorable hurricanes
In August and September 1992, Hurricane Andrew wrought havoc across the Caribbean and Florida. Andrew was an unusual storm—after brewing for several days at low latitudes, it weakened and nearly vanished about 600 km east of Puerto Rico. But the storm regained its strength and moved northward with devastating results. Andrew left 17,000 people homeless in Florida alone and destroyed or badly damaged 85,000 homes. The storm caused a record $26.5 billion in property damage. In 2002 Andrew, initially classified a Force 4, was upgraded to have actually been a Force 5 storm.
In November 1998, Hurricane Mitch tore through Central America, killing as many as 10, 000 people and leaving two million homeless in Nicaragua and Honduras. The storm's 300 km/h winds and heavy rains caused more than $3 billion in damage—more than half the combined gross domestic product of those two countries. Mitch also unleashed deadly landslides, and caused the worst flooding in the region in 200 years. In the storm's wake, with roads and infrastructure
A．Y
B．N
C．NG
第8题
A hurricane (飓风) is a powerful, rotating storm that forms over warm oceans near the equator. Hurricanes have strong, rotating winds, a huge amount of rain, low air【C1】______, thunder and lightning.
Hurricane winds【C2】______ in a counterclockwise spiral (螺旋状) around the calm, roughly【C3】______ center called the eye. in the eye,【C4】______ is roughly 20 to 30 miles wide, it is relatively calm and there is【C5】______ or no rain. The eye is the warmest part of the storm. Surrounding the eye is the eyewall, a wall of thunderclouds. The eyewall has the most rain and the strongest winds of the storm.【C6】______ rotating with wind speeds of at least 74 mph, a hurricane travels【C7】______ slowly across the ocean or land, usually【C8】______ about 20 to 25 mph. Long spiral rainbands (bands of rain clouds)【C9】______ to spiral inward to the eyewall. Hurricanes can be hundreds of miles【C10】______.
If this type of storm【C11】______ in the western Pacific Ocean, it is called a typhoon.
The exact location of a hurricane is easily【C12】______ by scientists, using satellite photos and radar.【C13】______ the direction, speed, and【C14】______ of a storm can change quickly,【C15】______ exactly where a storm will travel in the future is not easy.
Hurricanes can travel from the ocean to the coast and on to land,【C16】______ the wind, rain, and huge waves may cause extensive【C17】______. Generally, when a hurricane moves over land (or over cold ocean waters), the storm begins to【C18】______ and quickly【C19】______ because the storm is【C20】______ by warm water.
【C1】
A．movement
B．temperature
C．pressure
D．speed
第9题
In the midst of a severe nationwide downturn, the Louisiana economy is holding up better than most. It's a role reversal from a few years ago, when Louisiana was one of the country's weaker states financially following the destruction caused by Hurricane Katrina.
The state has the 10th lowest unemployment rate and was the only state to add nonfarm jobs in February, the most recent month for which data are available. Sales tax collections in New Orleans have risen close to levels seen before Katrina. And foreclosure rates have remained low by national standards, in part because the state never experienced a housing bubble.
What's unclear is how long the state can keep the downturn's worst demons at bay. March state-by-state employment data, which the Labor Department releases Friday, will offer fresh insights.
The major reconstruction effort that continues more than three and a half years after Katrina partly explains why Louisiana state has been fairly insulated from the worst of the recession.
How many states have a lower unemployment rate than Louisiana？
A．9
B．10
C．11
D．49
第10题
Paragraph 4 __________ 查看材料
A.Short history of naming hurricanes
B.Harnessing the hurricane energy
C.Difficulty in forecasting the course of a hurricane
D.Huge energy stored in a hurricane
E.Forecasting a hurricane through satellite watching
F.Different names for the same things
