The electricity ____, the light went out. A．c...

The electricity ____, the light went out.

高三英语单项填空中等难度题查看答案及解析

They have       the water supplies of the city.

A. cut off         B. cut out         C. cut down       D. cut in

高三英语单项填空中等难度题查看答案及解析

E

Windows not only let light in to cut down an electricity use for lighting, but the light coming through the window also provides heat. However, windows are not something people typically associate with being a cutting edge technology. Researchers are now working on new technologies that enable a window to quickly change from clear to dark and anywhere in between with a turn of a switch.

“It took us a long time to figure out what a window really is,” says Claes Granqvist, a professor of solid—state physics at Uppsala University in Sweden.“It’s contact with the outside world. You have to have visual contact with the surrounding world to feel well.” So, windows and natural light are important for improving the way people feel when they’re stuck indoors.

Yet, windows are the weak link in a building when it comes to energy and temperature control. In the winter, cold air leaks in. When it’s hot and sunny, sunlight streams in. All of this sunlight carries lots of heat and energy. And all of this extra heat forces people to turn on their air conditioners. Producing cold air, which can feel so refreshing, actually suck up enormous amounts of electricity in buildings around the world.

Windows have been a major focus of energy research for a long time. Over the years, scientists have come up with a variety of strategies for coating, glazing, and layering windows to make them more energy efficient. Smart windows go a step further. They use some technologies involving changes of color.

Electrochromic windows use electricity to change color. For example, a sheet of glass coated with thin layers(层) of tungsten oxide(氧化钨) works a bit like a battery. Tungsten oxide is clear when an electric charge is applied and dark when the charge is removed, that is, when the amount of voltage(电压) is decreased, the window darkens until it’s completely dark after all electricity is taken away. So applying a voltage determines whether the window looks clear or dark.

One important feature that makes a smart window so smart is that it has a sort of “memory”. All it takes is a small shock of voltage to turn the window from one state to the other. Then, it stays that way. Transitions take from 10 seconds to a few minutes, depending on the size of the window. The development of smart windows could mean that massive air conditioning systems may no longer need.“In the future,” Granqvist says,“our buildings may look different.”

67.Which statement does not indicate the importance of windows as described in the first two paragraphs?

A.Windows can change from clear to dark to save energy.

B.Windows help to save energy by letting light in.

C.Windows help to save energy by providing heat.

D.Windows enable people to have contact with the outside world.

68.According to the passage, smart windows are windows_______.

A.that are coated                        B.that use electricity

C.the color of which can be changed        D.that have many layers

69.To make electrochromic windows change color, what is applied to the window glass?

A.Electricity.     B.Tungsten oxide.    C.A battery.         D.A voltage.

70.What will be the benefit if the research on smart windows turns out to be successful?

A.The buildings will look different.

B.Windows can be as large as you want.

C.We may not need air conditioners any more.

D.They are less expensive than traditional windows.

高三英语阅读理解简单题查看答案及解析

–Why do you look so upset?

–The electricity was cut off suddenly and my essay _______ unfinished since.

A. was left        B. has left        C. left            D. has been left

高三英语单项填空中等难度题查看答案及解析

______, in some areas the electricity was cut off, ______ residents in 8 counties spend their lunar New Year’s Eve in darkness.

A. Making matters worse, making     B. What was worse, to make

C. Worse still, making              D. To make matters worse, to make

高三英语单项填空中等难度题查看答案及解析

Last week the electricity in my flat went out.1. My typical evening is spent watching TV and scrolling (滚动) through social media. Tonight this wasn’t possible. My roommate and I weren’t prepared with candles and matches. We just rely on electricity.

So for me it was an early night, 2. That night, losing our electricity felt like losing a basic necessity, as basic as running water. But really, electricity is a luxury that we’ve grown to take for granted. I use electricity all the time, even when it’s not really necessary.

3. And as I’m writing this, I have my lights on, even in the middle of the day when I don’t really need them.

4.It contributes to global warming. It is harming our environment and we need to do what we can to stop it. Not only that, but if we continue to use the same large amount of energy, we will soon run out of it.

How would we survive in a world without electricity? Our daily lives go around it. We wouldn’t be able to function. 5.So, shouldn’t we start preparing for it now? Cutting down on our use of electricity would save energy resources so that they could last for longer. And if everyone does it, we can make a big difference.

A. Yet we know one day we will run out of it.

B. Our over-use of electricity is a big problem.

C. This left me in complete darkness the whole night.

D. It is a real problem to cut down on the use of electricity.

E. I know for sure I could cut down on my use of electricity.

F. I couldn’t help but think, do we rely too much on electricity?

G. I turn on the TV in the background even when Tm not watching it.

高三英语七选五中等难度题查看答案及解析

Last week the electricity in my flat went out. I had just got home from work and was happily making my tea, when all a sudden I was surrounded by complete darkness. I tried to fix it but failed. I had to wait for an electrician to come in the morning. 1.

I sat down to eat my half-cooked dinner. And then I wasn’t really sure what to do. My typical evening is spent watching the TV and looking through social media. 2. So for me it was an early night. And I couldn’t help but think, do we rely too much on electricity? That night, losing our electricity felt like losing a basic necessity. As basic as running water.3. I use electricity all the time, even when it’s not really necessary.

4. It contributes to global warming. It is harming our environment and we need to do what we can to stop it. Not only that, but if we continue to use the same large amount of energy we will soon run out.

So, shouldn’t we start preparing for it now? Cutting back on our use of electricity would make losing it easier, and also save energy resources so that they could last for longer.5. And if everyone does the same, we can make a big difference.

A. Tonight this wasn’t possible.

B. Obviously, we can’t survive without it.

C. Our over-use of electricity is a big problem.

D. This left me a whole night without any electricity.

E. Electricity brings us convenience and trouble.

F. But really, we’ve grown to take electricity for granted.

G. I know for sure that I could cut down on my use of electricity.

高三英语阅读理解困难题查看答案及解析

Their water supply has been_______ because of the earthquake.

高三英语单项填空简单题查看答案及解析

Recent research has       the cause of the disease.

高三英语单项填空简单题查看答案及解析

After cutting down the tree, they _____ a little boat out of it．

高三英语单项填空中等难度题查看答案及解析