1 . Brown cows may not actually make chocolate milk, but pink silkworms（蚕）do produce pink silk, a team of scientists has discovered. To see if they could produce pre-dyed silk-silk that comes colored, straight from the source-the team fed ordinary silkworms mulberry（桑树）leaves that had been sprayed（喷洒）with fabric（织物）dyes（染色剂）. Out of seven tested dyes, only one worked, producing a thread that reminded me of pink-dyed hair.
And yes, the worms themselves take on some color before they produce silk. Their colorful diets did not affect their growth, the team, which included engineers and biologists from the CSIR-National Chemical Laboratory in India, reports in the journal ACS Sustainable Chemistry & Engineering. (The researchers didn't look too deeply into how the dyes affected the silkworms' health. After all, silkworms die when people harvest their silk.)
The team made dyeing silk this way because coloring fabric normally uses large amounts of fresh water. The water gets polluted with dangerous chemicals in the process, requiring costly treatment before factories can send it back into waterways. Dyeing silk directly by feeding silkworms would avoid those water-washing steps. Scientists are just starting to study this idea. However, it remains to be seen if it's commercially successful. In this experiment, the Indian team tested seven dyes, which are cheap and popular in the industry.
The scientists found different dyes moved through silkworms' bodies differently. Some never made it into the worms' silk at all. Others colored the worms and their silk, but the color disappears before the silk is turned into fabric. Only one dye, named "direct acid fast red", showed up in the final, washed silk threads. By the time it made it there, it was a pleasant, light pink.
1. The text is most probably a(n) ________.| A．science report | B．tourist guide |
| C．animal experiment | D．fashion advertisement |
| A．they are born pink | B．they are dyed pink |
| C．they grow in pink water | D．they are fed dyed food |
| A．In America. | B．In India. | C．In Israel. | D．In China. |
| A．One. | B．Three. | C．Five. | D．Seven. |
Some researchers think there might be a connection between UFOs and angel sightings. They say the angels and heavenly figures might actually have been extraterrestrials(外星人)。
After his experience in the 1980s with "the most beautiful thing" he ever saw, Lewis might agree with that assessment.
It was a Saturday morning in Mariposa, California, and Lewis had to work that day. The air was fresh from a cool rain the night before, and the morning sky was bright with a few scattered clouds.
"I was heading out to my car in the back parking lot of the apartment complex where I lived when I noticed someone kneeling next to my car," Lewis says. "This person saw me and quickly stood up holding a crowbar(撬棍),"
The young man was quite obviously astonished by Lewis's interruption, and although Lewis sensed the boy was up to no good, it hadn't yet hit him what he was doing. Then Lewis looked through the passenger window of his car and saw that the steering wheel column had been stripped(脱去)of its cover. He realized that the young man was trying to steal his car.
"I asked him what he was doing," Lewis recalls, "He gave me a lame story about his friend's car being stolen last night and that my car looked like his friend's and so on. I didn't want to hear it. I told him I was going to call the police, which I did on my cell phone."
Lewis dialed 911 and gave the dispatcher(调度员)the address. He told the would-be thief that the police were on their way and warned him not to leave. "If he did, I wasn't going to try to stop him because he had that crowbar," Lewis says.
As Lewis was questioning the young man, trying to detain(扣留)him, he began to notice three rather large clouds in a single-file formation that were almost overhead.
"Then I saw it," he says."A shiny object exited from the first cloud and entered the next and then came out of that one. It was shiny, like brightly polished objects, moving at a good speed. I couldn't make out the shape."
注意：1.续写词数应为150左右；
2.请在答题卡的相应位置作答。
By this time, Lewis was so distracted by the UFO.
____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________"As it sailed overhead, some of the arms and legs would move up and down, giving the impression of being alive!"
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