题目内容
（请给出正确答案）
Besides their source of energy, what is major difference between archaean and bacteria？
A．Their genetics.
B．Their size.
C．What they look like.
D．The amount of energy they need.
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B.When creating info records
C.When creating a purchase order
D.When creating contracts
The first major energy transition was from wood to coal. For many centuries people used wood as a primary source of energy. By burning wood people were able to heat their homes, cook their food, and produce basic items. Most early societies grew up near a sufficient supply of wood. The main advantage of wood was that it was easy to get and easy to bum.
During the early 1800's, some towns and villages began to make a transition from wood to coal as a basic source of energy, because they found that coal generally burns longer and at a higher temperature than wood, and a long-burning and hot-burning fuel was badly needed for the machines that were being used at that time. Another advantage of coal was that there was a lot of it and it was also easy to get. Besides, it could be easily shipped to faraway places.
As a result of the transition from wood to coal, industry developed very rapidly. People were able to get more things and their standard of living went up.
The second major energy transition was from coal to oil. We'll discuss it next week.
Why did most early societies grow up near a sufficient supply of wood？
A．Because wood was safer than coal.
B．Because wood burned longer than coal.
C．Because there was more wood than coal.
D．Because they used wood as primary source energy.
Newspapers have one basic【C4】______, to get the news as quickly as possible from its source, from those who make it to those who want to【C5】______it. Radio, telegraph, television, and other inventions brought【C6】______for news papers. So did the development of magazines and other means of communication.【C7】______, this competition merely spurred the news papers on. They quickly made use of the newer and faster means of communication to improve the【C8】______and thus the efficiency of their own operations. Today more newspapers are【C9】______and read than ever before. Competition also led newspapers to branch out to many other fields. Besides keeping readers【C10】______of the latest news, today' s newspapers【C11】______and influence readers about politics and other important and serious matters. Newspapers influence readers ' economic choices【C12】______advertising Most newspapers depend on advertising for their very【C13】______. Newspapers are sold at a price that【C14】______to cover even a small fraction of the cost of production. The main【C15】______of income for most newspapers is commercial advertising. The【C16】______in selling advertising depends on a newspaper' s value to advertisers. This is measured in【C17】______of circulation. How many people read the news paper？ Circulation depends【C18】______on the work of the circulation department and on the services or entertainment【C19】______in a newspaper' s pages. But【C20】______the most part, circulation depends on a newspaper' s value to readers as a source of information about the community, city, country, state, nation, and world--and even outer space.
【C1】
A．Just when
B．While
C．Long after
D．Before
Newspapers have one basic 【24】______ , to get the news as quickly as possible from its source, from those who make it to those who want to 【25】______ it.
Radio, telegraph, television, and 【26】______ inventions brought competition for newspapers. So did the development of magazines and other means of communication. 【27】______ , this competition merely spurred the newspapers on. They quickly made use of the newer and faster means of communication to improve the 【28】______ and thus the efficiency of their own operations. Today more newspapers are 【29】______ and read than ever before. Competition also led newspapers to branch out into many other fields. Besides keeping readers 【30】______ of the latest news, today's newspapers 【31】______ and influence readers about politics and other important and serious matters.
Newspapers influence readers' economic choices 【32】______ advertising. Most newspapers depend on advertising for their very 【33】______ .
Newspapers are sold at a price that 【34】______ even a small fraction of the cost of production. The main 【35】______ of income for most newspapers is commercial advertising. The 【36】______ in selling advertising depends on a newspaper's value to advertisers. This 【37】______ in terms of circulation. How many people read the newspaper？
Circulation depends 【38】______ on the work of the circulation department and on the services or entertainment 【39】______ in a newspaper's pages. But for the most part, circulation depends on a newspaper's value to readers as a source of information 【40】______ the community, city, county, state, nation, and world and even outer space.
【21】
A．Just when
B．While
C．Soon after
D．Before
【C1】
A．Just when
B．While
C．Soon after
D．Before
【C1】
A．makes sense
B．makes progress
C．takes place
D．takes part
(78) In the modern technological world the sea offers many resources to help mankind survive. Resources on land are beginning, to grow less. The sea, however, still offers hope to supply many of man's needs in the future.
The riches of the sea yet to be developed by man's technology are impressive. Oil and gas explorations have existed for nearly thirty years. Valuable amounts of minerals such as iron, copper and so on exist on the ocean floor.
Besides oil and gas, the sea may offer new sources of energy. For example, warm temperature of the ocean can be used as the steam in a steamship. Sea may also offer a source of energy as electricity for mankind.
Technology is enabling man to explore even deeper under the sea. It is obvious that the technology to harvest the sea continues to improve. (79) By the year 2050, experts believe that the problems to explore the food, minerals and energy resources of the sea will have been largely solved.
What is the best title for the passage？
A．Needs of Man
B．Sea Harvest and Food
C．Sea and Sources of Energy
D．Sea Exploring Technology
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