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Hurricanes are severe cyclones with winds over seventy five miles an hour ______ originate over tropical ocean waters.
A.which
B.who
C.where
D.how to
B.who
C.where
D.how to
参考答案
参考解析
解析：本题考查定语从句
A选项，句意：飓风是生成于热带海洋水域上空、风速达每小时75英里以上的强烈气旋。关系代词which引导的定语从句修饰名词winds.
B，选项，从句的先行词是winds，who的先行词一般是人，故排除。
C，选项，从句的先行词是winds，where的先行词一般是地点，故排除。
D，选项，与题意不符，故排除。
故正确答案为A选项。
A选项，句意：飓风是生成于热带海洋水域上空、风速达每小时75英里以上的强烈气旋。关系代词which引导的定语从句修饰名词winds.
B，选项，从句的先行词是winds，who的先行词一般是人，故排除。
C，选项，从句的先行词是winds，where的先行词一般是地点，故排除。
D，选项，与题意不符，故排除。
故正确答案为A选项。
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共用题干
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共用题干
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考题
共用题干
第二篇Hurricane（咫风）KatrinaA hurricane is a fiercely powertul , 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 storms 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 metbetween 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）一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.Which of the following is NOT a"requirement"for the formation of a hurricane?A:Calm surrounding atmosphere.B:High air pressure.C:Warm sea-surface temperature.D:A group of thunderstorms over warm tropical waters.
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共用题干
第三篇Hurricane（飓风）KatrinaA 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一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一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 U.S.,leaving a disaster zone of 90,000 square miles in its wake（尾迹）—almost the size of the U.K.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 U. S. since the Great Depression.The cost of the damage may top$100 billion.When the warm air from the sea surface begins to rise,it_______.A:creates an area of low pressureB:supplies cold air to the eye of a hurricaneC:increases the sea-surface temperatureD:strengthens the rotation of the earth
考题
共用题干
第三篇Hurricane（飓风）KatrinaA 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一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一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 U.S.,leaving a disaster zone of 90,000 square miles in its wake（尾迹）—almost the size of the U.K.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 U. S. since the Great Depression.The cost of the damage may top$100 billion.Which of the following is NOT a"requirement"for the formation of a hurricane?A:Calm surrounding atmosphere.B:High air pressure.C:Warm sea-surface temperature.D:A group of thunderstorms over warm tropical waters.
考题
共用题干
第三篇Hurricane（飓风）KatrinaA 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一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一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 U.S.,leaving a disaster zone of 90,000 square miles in its wake（尾迹）—almost the size of the U.K.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 U. S. since the Great Depression.The cost of the damage may top$100 billion.Which of the following is NOT true of Hurricane Katrina according to the last paragraph?A:The area affected is almost as big as the U.K.B:It has left a disaster zone of 90,000 square miles.C:Over half a million people have been forced to leave their homes.D:This crisis is more serious than that of the Great Depression.
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Hurricane1 A hurricane（腿风）is a tropical storm with winds that have reached a constant speed of 74 miles per hour. Hurricane winds blow in a large spiral（螺旋）around a relative calm center known as the"eye".The "eye" is generally 20 to 30 miles wide,and the storm may extend outward 400 miles.As a hurricane nears land,it can bring heavy rains,high winds,and storm surges（风暴潮）.The storm surges and heavy rainscan lead to flooding.2 Hurricanes are given a different label,depending on where they occur.If they begin over the NorthAtlantic Ocean,the Caribbean Sea,the Gulf 0f Mexico,or the Northeast Pacific Ocean,they are called hur- ricanes.Similar storms that occur in the Northwest Pacific Ocean west of the International Date line are called typhoons.Near Australia and in the Indian Ocean,they are referred to as tropical cyclones（龙卷风）.3 When a hurricane hits land,it can do great damage through its fierce winds,heavy rains,inland （内陆的）flooding,and huge waves crashing on to the shore. During a hurricane,homes,businesses,and public buildings may be damaged or destroyed;roads and bridges can he washed away.A powerful hurricane can kill more people and deRtroy more property than ally other natural disaster. Fishermen arc at special risk from hurricanes as they may be at sea when a hurricane arrives and not be able to get to a safe harbour ifthey do not receive adequate warning.4 If a hurricane is coming in your area,the most important thing is to stay calm and find shelter im- mediately.Go to your safe room.If you do not have 0110,stay indoors during the hurricane and go to safer place near the center of your home.Cover yourself with a blanket and be sure to keep away from windows and glass doors,because if the glass breaks,it's really dangerous.Do not be fooled if there is a lull（暂 停）;it could he the eve of the storm一winds will pick up again.A powerful hurricane may become the most destructive__________.A:different labelsB:windows and glass doorsC:inland floodingD:early warningE:natural disasterF:a constant speed
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getB
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extremely cold air from shore passes over warmer waterB
warm dry air from shore passes over cooler waterC
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cool rain passes through a warm air mass
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active weather disturbances such as hurricanes or tropical stormsB
the latest navigational warningsC
scheduled vessel arrivals and departures for a 24-hour periodD
water levels at river ports where run-off affects tidal heights
考题
单选题Which is the winter load waterline on the load waterline mark?（）.A
The line over the summer load waterlineB
The line above the tropical load waterlineC
The line below the tropical load waterlineD
The line between the summer and the winter north Atlantic load waterline
考题
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vertical distance from the tidal datum to the ocean bottomC
average height of water over a specified period of timeD
average height of all low waters at a place
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