更多"As the meteorologists described, th"的相关试题:
[单项选择]American federalism has been described as a neat mechanical theory. The national government was said to be sovereign in certain areas of governmental concern, such as the regulation of interstate commerce. State governments were said to be sovereign in certain other areas, such as regulation of intrastate commerce and exercise of the police power. One writer has described this as the "layer cake" concept of American federalism. In the top layer are neatly compacted all the powers of the national government; in the bottom layer are found the separate and distinct functions and powers of state governments.
How nice it would be if the American federal system could be so easily and conveniently analyzed. But Professor Martin Grodzins of the University of Chicago has gone on to describe federalism in practice as more like a marble cake, with a mixing of functions, than like a layer cake, with functions separate and distinct. This mixing can be seen best, perhaps, by examining the examp
A. as the power of the federal government increases, the power of the states decreases
B. state and national governments have not effectively cooperated in defining their areas of control
C. federal authorities have abused their constitutional power to regulate commerce
D. the rapid development of transportation networks has undermined federal authority
[单项选择]Hurricane Lili
A. threatened US shores.
B. lashed the Louisiana or upper Texas coast.
C. hit the Caribbean islands very close to Miami.
D. erupted into a major force in the Gulf of Mexico.
[单项选择]
Hurricane Katrina
A hurricane is a fiercely powerful, rotating 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 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 heat in the process. It is this heat energy, combined with the ro
A. The tropical waters are warm and calm.
B. The sea-surface temperature exceeds 27℃.
C. There are thunderstorms over warm tropical waters.
D. The atmosphere surrounding the sea is calm.
[单项选择]
Hurricane Katrina
A hurricane is a fiercely powerful, rotating 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 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 heat in the process. It is this heat energy, combined with the rotation of the Earth that
A. A native American storm god.
B. A rotating form of tropical storm that can be 124 to 1,240 miles in diameter.
C. A calm central region of low pressure between 12 to 60 miles in diameter.
D. A storm that can release as much energy as 10,000 nuclear bombs.
[填空题]Meteorologists suspect that the hotter summers and decreased rainfall of the 1980s might be ______.
[单项选择]Meteorologists routinely tell us what next week’s weather is likely to he, and climate scientists discuss what might happen in 100 years. Christoph Schar, though, ventures dangerously close to that middle realm, where previously only the Farmer’s Almanac dared go: what will next summer’s weather be like Following last year’s tragic heat wave, which directly caused the death of tens of thousands of people, the question is of burning interest to Europeans. Schar asserts that last summer’s sweltering temperatures should no longer be thought of as extraordinary. "The situation in 2002 and 2003 in Europe, where we had a summer with extreme rainfall and record flooding followed by the hottest summer in hundreds of years, is going to be typical for future weather patterns," he says.
Most Europeans have probably never read Schar’s report (not least because it was published in the scientific journal Nature in the dead of winter) but they seem to be bracing themselves for the worst. As part
A. They found the cloud’s reaction to the carbon level of the atmophere was too complex to predict.
B. They were puzzled by the carbon levels in the atmosphere’s cloud.
C. The atmosphere’s reaction to the carbon level’s raise is more diffcult to predit than they ever thought.
D. Too many uncertainties in the atmosphere’s carbon level are to be reduced.
