Inside the pleasingly fragrant cafe, So All May Eat(SAME) in downtown Denver ,the spirit ofgenerosityis instantly noticeable :donation box stands in place of a cash register. Customers here pay only what they can afford, no questions asked.A risky business plan, perhaps, but SAME Cafe has done one unchangeable thing in the Mile High City for six years: Open only at midday, the restaurant allows poor local customers who cannot pay to work as volunteers instead. They can act as waiters and waitresses, and dishwashers, or look after the buildings and equipment for the cafe. It's based on trust, and it's working all right", says co-owner Brad Birky, who started the cafe in 2006. Previously volunteering at soup kitchens, the Birkys were dissatisfied with the often unhealthy meals they served there. "We wanted to offer quality food in a restaurant where everyone felt comfortable, regardless of their circumstances," Birky says. SAME's special lunch menu changes daily and most food materials are natural and grown by local farmers. The cafe now averages 65 to 70 customers (and eight volunteers) a day. And the spirit of generosity behind the project appears to be spreading. In early 2007,one volunteer who had cleared snow for his meals during t he long winter said goodbye to the Birkys, He said he was going to New Orleans to help with the hurricane clearing up," says Birky. What can we learn about the soup kitchens the Birkys previously worked for? A) They refused to have volunteers. B) They offered low quality food. C) They provided customers with a good environment. D) They closed down because of poor management.
B
Medical drugs sometimes cause more damage than they cure. One solution to this problem is to put the drugs inside a capsule, protecting them from the body--and the body from them--until they can be released at just the right spot. There are lots of ways to trigger this release, including changing temperature, acidity, and so on. But triggers can come with their own risks--burns, for example. Now, researchers in California have designed what could be a harmless trigger to date: shining near-infrared light (NIR, ) on the drug in the capsule. The idea of using light to liberate the drug in the capsule isn't new. Researchers around the globe have developed polymers and other materials that begin to break down when they absorb either ultraviolet (UV, ) or visible light. But tissues also readily absorb UV and visible light, which means the drug release can be triggered only near the skin, where the light can reach the capsule. NIR light largely passes through tissues, so researchers have tried to use it as a trigger. But few compounds absorb NIR well and go through chemical changes. That changed last year when Adah Almutairi, a chemist at the University of California, San Diego, reported that she and her colleagues had designed a polymer that breaks down when it absorbs NIR light. Their polymer used a commercially available NIR-absorbing group called o-nitrobenzyl (ONB). When they catch the light, ONB groups fall off the polymer, leading to its breakdown. But ONB is only a so-so NIR absorber, and it could be poisonous to cells when it separates from the polymer. So Almutairi and her colleagues reported creating a new material for capsules that's even better.This one consists of a long chain of compounds called cresol groups linked in a polymer. Cresol contains reactive components that make it highly unstable in its polymeric form, a feature Almutairi and her colleagues use to their advantage. After polymerizing the cresols, they cap each reactive component with a light-absorbing compound called Bhc. When the... According to the passage, which of the following could be the best trigger? A) Temperature change. B) NIR light. C) Acidity change. D) UV light.
B
(Q).
For eighty four days old Santiago had not caught a single fish. At first a young boy, Manolin, had shared his bad fortune, but after the fortieth luckless day the boy's father told his son to go in another boat. From that time on, Santiago worked alone. The boy loved the old fisherman and always helped him with money and food. Usually, they would talk about the fish they had taken in luckier times or about American baseball after supper, while at night, alone in his cottage, Santiago dreamed of lions on the beaches of Africa, where he had gone years before. _ On the eighty-fifth day, Santiago set off to fish before dawn. Two of his baits were fresh tunas the boy had given him, as well as sardines to cover his hooks. Then he set his lines which went straight down into deep dark water. As the sun rose he saw other boats in toward shore. A bird showed him where dolphins were chasing some flying fish. This time Santiago saw tuna jumping in the sunlight. A small one took the hook on his line. Pulling the fish aboard, the old man thought it a good fortune. Toward noon a marlin, a common fish in the sea, started eating the bait which was one hundred meters down. Gently the old man played the fish, a big one, as he knew from the weight on the line. At last he struck to settle the hook. The fish did not come out of the surface. Instead, it began to pull the boat to the northwest. The old man followed it. _ It was cold after the sunset. When something took one of his remaining baits, he cut the line with his knife. Once the marlin leaned suddenly, pulling Santiago forward on his face and cutting his cheek. By dawn his left hand was cramped . The fish had headed northward; there was no land in sight. Hungry, he cut pieces from the tuna and chewed them slowly. That morning the fish jumped. Seeing it, Santiago knew he had hooked the biggest marlin he had ever seen. Then the fish went down and turned toward the east. Santiago drank a little water from the bottle during the hot afternoon. Close to nightfall a dolphin... Which sentence below can be used to best describe Santiago's character? A) "He no longer dreamed of his dead wife."(Para 1) B) "Although he was alone and no longer strong, he had his skill and knew many tricks."(Para4) C) "Almost exhausted, he finally drew his big fish alongside and drove in the harpoon."(Para7) D) "Once he fell under their weight and lay patiently until he could gather his strength to go on ."(Para 9)
(A).
D