—_______ us another hour, I suppose, and we will fulfill the task perfectly.
—Will that do? OK.
| A．To give | B．Give | C．Giving | D．Given |
名校课堂系列答案科目：高中英语 来源： 题型：单选题
查看答案和解析>>
科目：高中英语 来源：2011届湖北省黄石二中高三模拟适应性考试（英语） 题型：阅读理解
An early invention by Albert Einstein has been rebuilt by scientists at Oxford University. They are trying to develop an environmentally friendly refrigerator that runs without electricity.
We all know that modern fridges cause damage to the environment. They work by using a kind of man-made greenhouse gas called Freon (氟里昂), which is far more damaging than carbon dioxide.
Now Malcolm McCulloch, an electrical engineer at Oxford, is leading a three-year project to develop appliances that can be used in places without electricity.
His team has completed a prototype (样机) of a fridge patented in 1930 by Einstein. It used only pressurized gases to keep things cold. The design was partly used in the first refrigerators, but the technology was dropped when more efficient compressors (压缩机) became popular in the 1950s. That meant a switch to using Freon.
Einstein's idea uses butane (丁烷) and water and takes advantage of the fact that liquids boil at lower temperatures, when the air pressure around them is lower.
"If you go to the top of Mount Qomolangma, water boils at a much lower temperature than it does when you're at sea level and that's because the pressure is much lower up there," said McCulloch.At one side is the evaporator (蒸发器), a bottle that contains liquid butane. "If you introduce a new vapor above the butane, the liquid boiling temperature decreases and, as it boils off, it takes energy from the surroundings to do so," says McCulloch. "That's what makes it cold."
The gas fridges based on Einstein's design were replaced by Freon-compressor fridges partly because Einstein's design was not very efficient. But McCulloch thinks that by changing the design and replacing the types of gases used it will be possible to quadruple (翻两番) the efficiency.
However, McCulloch's fridge is still in its early stages. "It's very much a prototype," he said. "Give us another month and we'll have it working."
【小题1】 According to the passage, an early invention by Albert Einstein _______.
| A．has been rediscovered because it costs much less and works more efficiently |
| B．is being redesigned because it could be used in places without electricity |
| C．has just been found to be energy-saving and environmentally friendly |
| D．will be fully made use of and become the fridge of the future |
| A．Freon was used in fridges long before the 1950s. |
| B．Freon is what makes current fridges big polluters. |
| C．McCulloch thinks he could improve Einstein's design by using other types of vapors. |
| D．The fridge Malcolm McCulloch and his team designed will be put into production soon. |
| A．changed the air pressure around it |
| B．was tested on the top of Mount Everest |
| C．increased the liquid boiling temperature |
| D．used only pressurized gases to keep things cold |
| A．serve as an explanation for the principle behind Einstein's fridge |
| B．give you the reason why Einstein's fridge was not efficient |
| C．tell you how to take advantage of low air pressure |
| D．show you how Einstein's fridge works |
查看答案和解析>>
科目：高中英语 来源：2013届内蒙古呼伦贝尔市高三二模考试英语试卷（解析版） 题型：
The expert offered us another piece of advice , ___ of great help to our program.
A. I think it is B. I think which is C. which I think it is D. which I think is
查看答案和解析>>
科目：高中英语 来源：河南省2009-2010学年高三5月模拟考试试题（英语） 题型：单项填空
—_______ us another hour, I suppose, and we will fulfill the task perfectly.
—Will that do? OK.
|
A．To give |
B．Give |
C．Giving |
D．Given |
查看答案和解析>>
科目：高中英语 来源：广西桂林十八中2009-2010学年度高二下学期4月段考（英语） 题型：阅读理解
第三部分：阅读理解（共15小题；每小题2分，满分30分）
阅读下列短文，从每题所给的四个选项（A、B、C 和D）中，选出最佳选项。
Having divorced (离婚) my dad, my mom had to move frequently in order to find a job that would provide her with enough money to support the big family. For three years, we lived in the town of Parkersburg. On the first Christmas there, my brothers and I had been well prepared for a holiday without presents. But we had a surprise on Christmas Eve.
At midnight, we were woken up by someone shouting at our front door, “Ho, ho, ho! Merry Christmas!” We jumped up and ran to the door to find no one there, but several boxes and bags! Not only were there gifts, which were our favorite, but there were also clothes and food. Each of us kids, as well as Mom, had gifts with our names on them. And the clothes all fit us!
Another year went by and on Christmas Eve, we again got boxes and bags full of goodies. The next year we moved. We were in the same town but across the other side. Mom was beginning to get on her feet. Since we had moved and Mom had a better job, we were quite certain that “Santa” wouldn’t visit us that year. But we were wrong!
Those “Santa” visits restored in me the belief in the goodness of mankind, though to this day we don’t know who our helper was.
When we grew up, Mom moved to Virginia. She had some extra money one Christmas. She sent it to me and let us know her decision. We then took action. My husband and children had so much fun buying and wrapping presents for the needy family we had chosen. On Christmas Eve, we allowed the excited kids to stay up late to be part of our secret “Santa” project.
Such satisfaction there was in being able to pass on the gift of love to others who needed it. And the gift goes on!
56. From the first paragraph, we can learn that ______.
A. the writer’s family didn’t like to celebrate Christmas
B. the writer felt sorry about not having Christmas presents
C. the writer’s mother couldn’t afford any Christmas presents
D. the writer knew that something surprising would happen
57. The presents that the writer’s family received must be from _______.
A. someone who has no children B. someone who knew them well
C. the church in the neighborhood D. the richest family in the town
58. What decision did the writer’s mom make in the fifth paragraph?
A. To give her extra money to a poor family.
B. To thank the person who once helped her family.
C. To give some Christmas presents to a poor family in secret.
D. To invite a poor family to spend Christmas with her family.
59. This passage is written to ______.
A. show pity to the poor people B. show human kindness
C. thank the helper D. show the advantages of being rich
查看答案和解析>>
湖北省互联网违法和不良信息举报平台 | 网上有害信息举报专区 | 电信诈骗举报专区 | 涉历史虚无主义有害信息举报专区 | 涉企侵权举报专区
违法和不良信息举报电话：027-86699610 举报邮箱：58377363@163.com
