It was so dark that ___anything.

A. The day was so dark that it’s hard to make a good photograph.

B. The day was dark, so as to make a good photograph hard.

C. The dark day makes a good photograph hard

A.find

B.tell

C.say

D.know

vants cold please her.

A) specific B) special C) precise D) particular

51. Last night he saw two dark ___ enter the building, and then there was the explosion.

A.read about

B.call on

C.learn of

D.feel for

A) dark

B) dense

C) black

D) bold

metime after dusk every Thursday________

A、make an unnoticed departure

B、make a signaling or summoning gesture

C、make a sudden dash

D、make a fatal stroke

按要求翻译下列句子(短语)。

The charcoal was crackling away too and casting a ruddy glow over the dark man, so that he looked like iron that had turned a faint red.(注意声色词的翻译)

Smart Window

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 flip of a switch.

"It took us a long time to figure out what a window really is," says Claes Granqvist. He's 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 blasts of 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 chromogenic technologies which involve changes of color.

Electrochromic windows use electricity to change color. For example, a sheet of glass coated with thin layers of chemical compound such as tungsten oxide 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 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 jolt of voltage to turn the window from one state to the other. Then, it stays that way. Transitions take anywhere 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. "

Which of the following statements 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.

Oct. 5, 2002

Dear Michael,

I'm so glad to hear that you are coming to China next month. I do hope you'll have time to visit my hometown Suzhou. It is known as "paradise on earth". The ancient city of Suzhou has remained on its original site for over 2500 years. The while walls and the dark roof files of houses, and the graceful bridges over flowing waters make if look like a marvelous traditional Chinese ink painting There are over 60 elegant classical gardens in the city. They combine the arts of architecture and gardening, and are a true representation of traditional Chinese culture.

Suzhou is also famous for its silk products. I'm sure your suitcases will be crammed with silk scarves. suits, pajamas on your way to the States.

Yours,

Li Wen

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