题目内容
It could be learned from the teacher's eyes ________ he was very satisfied with her performance．
- A.that
- B.whether
- C.what
- D.where
阅读快车系列答案Simon made a big bamboo box _______ the little sick bird till it could fly.
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A．keep |
B．kept |
C．keeping |
D．to keep |
Researchers at the University of Bedforshire have developed a new technique for powering electronic device（装置）. The system, developed by Professor Ben Allen at the Centre for Wireless Research, uses radio（无线电） waves as power.
Believed to be a world first, the team claims it could eventually eliminate (or get rid of )the need for conventional batteries. The university has now filed a patent application to secure the only rights to the technique.
Professor Allen and his team have created a system to use medium wave frequencies to replace batteries in small everyday devices like clocks and remote controls.
The new technique uses the “waste” energy of radio waves and has been developed as part of the university’s research into “power harvesting”. Professor Allen said that as radio waves have energy―like light waves, sound waves or wind waves―then, in theory, these waves could be used to create power.
“The emerging（新兴的）area of power harvesting technology promises to reduce our reliance on conventional batteries,” he said. “It’s really exciting way of taking power from sources other than what we would normally think of.”
The team is now waiting for the results of the patent application to secure recognition of the technique. Professor Allen said that the team’s achievements had all been done in their “spare time”. “Our next stage is to try and raise some real funds so that we can take this work forward and make a working prototype（模型）and maybe partner up with the right people and take this to a full product in due course,” he said.
“Power harvesting has a really important part in our future, because, just in this country, we dispose of somewhere between 20,000 and 30,000 tonnes of batteries in landfill（垃圾填理）sites every single year－that is toxic chemicals going into the ground.”
He added that development of the product could also be “commercially beneficial”. “The market for this is several billion pounds. We’ve seen market predictions for 2020 which have these kinds of figures, so there’s a lot of commercial potential in this area,” he said.
Pro-Vice Chancellor at the University of Bedfordshire, Professor Carsten Maple, said, “This type of work is a reflection of the university’s growing reputation and experience in conducting innovative（创新的）research.”
1.From the text we know the new technique for powering electronic devices_____.
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A．can be applied to all electronic devices. |
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B．uses radio waves to create power. |
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C．has replaced conventional batteries. |
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D．produces many toxic chemicals. |
2.According to Professor Allen, power harvesting technology______.
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A．makes every use of radio waves. |
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B．takes power from usual sources. |
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C．reduces our dependency on conventional batteries. |
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D．aims at huge commercial benefits. |
3.What can we learn about Professor Allen and his team from the text?
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A．They have made use of radio waves in their daily life. |
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B．They have raised a big fund to support their research. |
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C．They have gained a patent for their new technology. |
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D．They mainly did their research in their spare time. |
4.What is Professor Carsten Maple’s attitude toward the new technique?
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A．Critical. |
B．Favorable. |
C．Conservative. |
D．Negative. |
5.What is the text mainly about?
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A．A new technique to create power. |
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B．A crisis concerning conventional batteries. |
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C．Some special sources of power. |
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D．The development of power harvesting. |
Between 10,000 and 15,000 years ago, some humans discontinued their wandering hunting and gathering and settled down to farm. Grain was the first domesticated crop that started that farming process.
The oldest proven records of brewing are about 6,000 years old and refer to the Sumerians. Sumeria lay between the Tigris and Euphrates rivers including Southern Mesopotamia. It is said that the Sumerians discovered the fermentation (发酵) process by chance. No one knows today exactly how this occurred, but it could be that a piece of bread or grain became wet and a short time later, it began to ferment.
The Sumerians were able to repeat this process and are assumed to be the first civilized culture to brew beer. They had discovered a “divine drink” which certainly was a gift from the gods. The word beer comes from the Latin word bibere, meaning “to drink”, and the Spanish word cerveza originates from the Greek goddess of agriculture, Ceres.
A vitamin-rich porridge, used daily, beer is reported to have increased health and longevity and reduced disease and malnutrition (营养不良). The self-medicating properties of alcohol-rich beer also eased the tensions and stresses of daily living in a hostile world. The use of yeast (酵母) was not yet known at that time. The success of the fermentation process was left to chance, as the brewers unknowingly relied on yeast particles in the air.
Considerable scientific research took place in breweries (酿酒厂) in the 19th century. A famous work from 1876 by Louis Pasteur was Studies Concerning Beer where he revealed his knowledge of micro-organisms. By establishing that yeast is a living microorganism, Pasteur opened the gates for accurately controlling the conversion (转换) of sugar to alcohol.
Another discovery in beer brewing was the work of Christian Hansen, a Danish scientist, who successfully isolated a single yeast cell and induced it to reproduce on an artificial culture medium. With the resulting yeast multiplication (繁殖) methods, the purity of the fermenting process has been improved.
1.According to the passage, who was the first to brew beer?
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A．The Greeks. |
B．Christian Hansen. |
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C．Louis Pasteur. |
D．The Sumerians. |
2.The last two paragraphs mainly talk about .
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A．the function of micro-organisms |
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B．the success of the fermentation process |
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C．two scientific discoveries about brewing |
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D．the results of yeast multiplication methods |
3.According to the text, which of the following is NOT true?
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A．Grain was the first crop used to brew beer. |
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B．There are some yeast particles in the air. |
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C．The word “beer” originates from Latin. |
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D．Modern beer contains more alcoholic. |
4.Which would be the best title for the text?
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A．The beer culture. |
B．The history of beer. |
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C．The earliest brewery. |
D．Methods of brewing beer. |
The word “conservation” has a thrifty meaning. To conserve is to save and protect, to leave what we ourselves enjoy in such a good condition that others may also share the enjoyment. Our forefathers had no idea that human population would increase faster than the supplies of raw materials: most of them, even until very recently, had the foolish idea that the treasures were “limitless” and could “last forever”. Most of the citizens of earlier generations knew little or nothing about the complicated and delicate system that runs all through nature, and which means that, as in a living body, an unhealthy condition of one part will sooner or later be harmful to all the others.
Fifty years ago, nature study was not part of school work; scientific forestry was a new idea; wood was still cheap because it could be brought in any quantity from distant woodlands; soil destruction and river floods were not national problems; nobody had yet studied long-term climatic cycles in relation to proper land use; even the word “conservation” had nothing of the meaning that it has for us today.
For the sake of ourselves and those who will come after us, we must now set about correcting the mistakes of our forefathers. Conservation should be made part of everybody's daily life. To know about the water table (水位) in ground is just as important to us as a knowledge of the basic math formulas(公式). We need to know why all watersheds (上游集水区) need the protection of plant life and why the running current of streams and rivers must be made to give their full benefit to the soil before they finally escape to the sea. We need to be taught the duty of planting trees as well as of cutting them. We need to know the importance of big, grown trees, because living space for most of man's fellow creatures on this planet is figured not only in square measure of surface but also in cubic（立方体的） volume above the earth. In a word, it should be our goal to restore as much of the original beauty of nature as we can.
1.The author's attitude towards the use of natural resources is_________.
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A．positive |
B．uninterested |
C．optimistic |
D．critical |
2.According to the author, the greatest mistake of our forefathers was that________.
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A．they had no idea about scientific forestry |
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B．they had little or no sense of environmental protection |
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C．they were not aware of the importance of nature study |
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D．they had no idea of how to make good use of raw materials |
3.To avoid repeating the mistakes of our forefathers, the author suggests that ________.
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A．we plant more trees |
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B．natural sciences be taught to everybody |
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C．environmental education be given to everybody |
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D．we return to nature |
4.How can you understand the underlined sentence in the last paragraph?
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A．Our living space on the earth is getting smaller and smaller. |
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B．Our living space should be measured in cubic volume. |
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C．We need to take some measures to protect space. |
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D．We must preserve good living condition for both birds and animals. |