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更多“light的过去式是（）”相关的问题
Why was it possible for these ancient trees let more light through than modern ones？
A．Because they were closely spaced, only 3 to 16 feet apart.
B．Because they were smaller plants and shrubs.
C．Because their branches did not fan out as far as to form. a shape like umbrella.
D．Because they had very small leaves like that of fern and dropped easily.
The first English window was just a slit in the wall. (29) It was cut long, so that it would let in as much light as possible, and narrow, to keep out the bad weather. However, the slit let in more wind than light. This is why it was called "the wind's eye". The word window itself comes from two Old Norse words for wind and eye.
Before windows were used, the ancient halls and castles of northern Europe and Britain were dark and smoky. Their great rooms were high, with only a hole in the roof to let out the smoke from torches and cooking fires.
As time went on, people wanted more light and air in their homes. They made the wind's eyes wider so as to admit air and light. They stretched canvas across them to keep out the weather.
The first window was a______.
A．large hole in the roof
B．hole with canvas stretched across it
C．long and narrow slit in the wall
D．slit to let out the smoke from fires
听力原文：M: Would you please tell me where I can get batteries for this brand of camera？
W: Let me have a look. Oh, yes, go down this aisle, pass the garden tools, you'll find them on the shelf next to the light bulbs.
Q: What is the man looking for？
(17)
A．Batteries.
B．Garden tools.
C．Cameras.
D．Light bulbs.
W: Oh, that's OK. It hasn't been working right for some time now.
Q: What is the man's problem？
(14)
A．He doesn't know where he put the calculator.
B．He lost a button at work.
C．He's not sure how to solve the math problem.
D．He thinks he broke something the woman lent him.
W：Oh! That's OK．It hasn't been working right for some time now.
Q：What's the man's problem？
(14)
A．He lost a button at work.
B．He doesn't know where he put the calculator.
C．He thought he broke something the woman lent him.
D．He's not sure how to solve the math problem.
听力原文： Today, I'll be talking about the invention of the camera and photography. The camera is often thought to be a modem invention. But as early as 1727, a German physicist discovered that light darkens silver salt, a chemical compound. Using as a camera, a big box with small hole to let the light in, he made temporary images on the salt. Silver salt is still the base of film today.
Then a French scientist made the first permanent picture by using a special piece of metal sensitized with silver salt. A photograph he made in 1826 still exists. The painter, Daguerre improved on the process by placing common salt on the metal, This was in 1839, the official date of the beginning of photography, but the problem was the printing of the photographs, and it wasn't until other scientists developed the kind of paper we now use, that good printing was possible and photograph became truly modern.
In 1860's, Matthew Bradey was able to take his famous pictures of the American Civil War. In the 20th century, George Eastman of the Untied States simplified film developing, and Dr. Edwin Land invented the so-called "instant" camera with self-developing film. If we say that photography came into existence in 1839 it follows that it has taken more than one hundred years for the camera to reach its present condition of technical refinement.
(30)
A．Light darkens silver salt.
B．Light darkens natural salt.
C．Light darkens silver.
D．Light darkens self-developing film.
