题目内容
（请给出正确答案）
A．Energy from coal.
B．Energy from natural.
C．Energy from the sun.
D．Energy from oil.
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更多“A．Energy from coal.B．Energy fr…”相关的问题
This passage is most probably taken from an article entitled" ______".
A．Energy Conservation
B．House Building Crisis
C．Air pollution Indoors
D．Traps in Building Conservation
This passage is most probably taken from an article entitled " ______ ".
A．Energy Conservation
B．House Building Crisis
C．Air Pollution Indoors
D．Traps in Building Construction
Which ofthe following statements is correct？
A．Energy from coal would not pollute our living environment．
B．Energy from natural gas would not pollute our living environment．
C．Energy from the sun would not pollute our living environment．
D．Energy from oil would not pollute our living environment．
What benefits will North Korea obtain from some other countries？
A．energy and security guarantees
B．political independence
C．free trade
D．military aid
What can be inferred from the second sentence of the last paragraph？
A．Energy parks will be built upon previously undeveloped sites.
B．Energy parks will be built in areas remote from major population centers.
C．Energy parks can be built in a concentrated place to serve a big city.
D．Energy parks will be built at sites that are near fuel sources such as coal.
This passage is most probably take from an article entitled" ______ ".
A．Energy Conservation
B．House Building Crisis
C．Air Pollution Indoors
D．Traps in Building Construction
Green plants combine ______ with water and carbon dioxide to make food.
A．energy derived from light
B．energy, derived it from light
C．energy is derived from light
D．from light, and energy derived
听力原文： Although I think the United States generally has an excellent system of transporting people between cities that .are only a few hundred miles apart, a person commuting between Detroit and Chicago, or between san Francisco and Los Angeles, so-called strip cities, may spend only a relatively short time in the air while spending several hours getting to and from the airport. This situation makes flying almost as time-consuming as driving. Moreover, airplanes use a lot of their fuel just getting into the air. They simply are not fuel-efficient on short trips.
High-speed trains may be an answer. One fairly new proposal for such a train is for something called a "maglev", meaning a magnetically-levitated train.
Maglevs will not actually ride on the tracks, but will fly above tracks that are magnetically activated. This will save wear and tear on the tracks. These trains will be able to go faster than one hundred fifty miles per hour. At that speed, conventional trains have trouble staying on the tracks. As you can see, maglevs offer exciting possibilities for the future.
(33)
A．Energy conservation.
B．A new kind of transportation.
C．Strip cities.
D．Advantages o{ air transportation over rail roads.
High speed trains may be an answer. One fairly new proposal for such trains is for some- thing called a Maglev, meaning a magnetically levitated train. Maglev will not actually ride on the tracks, but will fly above tracks that are magnetically activated. This will save wear and tear on the tracks. These trains will be able to go faster than 150 miles per hour. At this speed, conventional trains have trouble staying on the tracks.
As you can see, Maglev offers exciting possibilities for the future.
What is the main topic of the talk？
A．Energy conversation.
B．Transportation of the future.
C．Transportation problem.
D．Advantages of air transportation over railroad.
What is the main topic of the passage？
A．Energy conservation.
B．Transportation of the future.
C．Strip cities.
D．Advantages of air transportation over railroads.
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