At the conference yesterday, our differences___________________(进一步缩小), so the next step is to work out a solution.
At the conference yesterday, our differences___________________(进一步缩小), so the next step is to work out a solution.
A.Follow
B.Following
C.Having followed
D.Followed
A、Do your results provide answers to your testable hypotheses?
B、Do your findings agree with what others have shown?
C、Given your conclusions, what is our new understanding of the problem you investigated and outlined in the Introduction?
D、If warranted, what would be the next step in your study?
A、South Pole
B、North Pole
C、Equator
D、Crater
A、Given your conclusions, what is our new understanding of the problem you investigated and outlined in the Introduction?
B、If warranted, what would be the next step in your study, e.g., what experiments would you do next?
C、Do your results provide answers to your testable hypotheses? If so, how do you interpret your findings?
D、Do your findings agree with what others have shown? If not, do they suggest an alternative explanation or perhaps an unforeseen design flaw in your experiment (or theirs?)
There is no question that computer applications such as(71), electronic mail, and(72)publishing have changed the way people work. These computer applications have enhanced users capacity for communication and have improved their productivity. The success of these applications has prompted both vendors and researchers to continue to seek new ways to further advance the information technology revolution. Enter the latest innovation: networked(73)systems. They convey information in multiple(74): text, graphics, video, audio,(75), computer simulations, and so forth. Advocates of these systems argue that they are the next logical step in human communication; however, modifying our current networks to accommodate the variety of media will present significant technical difficulties.
A.word transaction
B.word processing
C.word disposal
D.word dealing
What is the first step in the employment process?
A.Applicants will take an examination.
B.The Personnel Department will receive applications.
C.Applicants will undergo a first interview.
D.The Human Resources Department will prepare a shortlist.
Plants are the basis of the food pyramid for all living things, even for other plants. They have always been enormously important to the welfare of people, not only for food, but also for clothing, weapons, tools, dyes, medicines, shelter, and a great many other purposes. Tribes living today in the jungles of the Amazon recognize literally hundreds of plants and know many properties of each. To them, botany, as such, has no name and is probably not even recognized as a special branch of "knowledge" at all.
Unfortunately, the more industrialized we become, the farther away we move from direct contact with plants, and the less distinct our knowledge of botany grows. Yet everyone unconsciously has an amazing amount of botanical knowledge, and few people will fail to recognize a rose, an apple, or an orchid. Our Neolithic ancestors, living in the Middle East about 10,000 years ago, discovered that certain grasses could be harvested and their seeds planted for richer yields the next season. That was the first great step in a new association between plants and animals. Grains wore discovered and from them flowed the marvel of agriculture: cultivated crops.
(30)
A.Botany is a very ancient learning.
B.People in the Stone Age knew a lot about plants.
C.People in the Stone Age knew little about plants.
D.Pre-industrial societies have little insights about plants.
During the course of a day, the boilers at one of our power plants, Morgantown, for example, can turn 24 million gallons of water into steam. That generating plant alone uses 9,900 tons of coal in its furnaces in just one day. Potomac Electric Power Company (PEPCO) uses so much coal that we have purchased two 80-car unit trains to facilitate the delivery process. And Morgantown alone can produce over 25 million kilowatthours of electricity in a single day's operation.
Electricity is produced by spinning large magnets inside a coil of wire within the generator. The faster we spin the magnets, the higher will be the voltage of the electricity produced. Electricity leaves a PEPCO generator at between 13,800 and 24,000 volts.
The next step in the process occurs when electricity passes through a transformer where the voltage is stepped up to continue on its journey. A transmission wire is like a small diameter pipe. Stepping up the voltage is like increasing water pressure, thus speeding the flow of energy through the system.
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