Article: Three-dimensional printers are fast becoming everyday devices in the United States. Three-D printers are used to make everything from automobile parts to bone replacements for human patients. American research scientists are now working on creating replacements for living tissue. Researchers at the Medical University of South Carolina have been working on creating and manufacturing living tissue since 2003.This process is called biofabrication . It requires special printing equipment and a special kind of ink. Traditional printers require ink to produce an image or design on a piece of paper. For their three-D printer, the South Carolina researchers prepare complex nutritious solutions they call bio-inks. Bio-inks are made of proteins and glucose , which normally provides energy for most cells of the body. The researchers also add living cells taken from the animal that will receive the new, printed tissue. The bio-inks are then added to a device that researchers call the Palmetto bio-printer. Sarah Grace Dennis is one of the researchers at the Medical University of South Carolina. She says new technology, like the Palmetto bio-printer, is a great help to the biofabrication process. The bio-inks are placed in three dispensers , containers, inside the printer. Lasers control both the position of the printing surface and the places where the bio-ink is released. Michael Yost is a leader of the research team. He says the printing process is fully automated-- machine-operated. He says that the Palmetto bio-printer makes it possible to create complex tissue types. The researchers say bio-printing is still experimental. But they hope in a few years they may be able to print tissue to replace damaged human organs. But there are still some problems which need to be solved. Some scientists worry about how to get blood to the replacement tissue. The flow of blood is important to keep the printed tissue alive. Michael Yost hopes that more people will believe in the benefits of biofabrication. "Tissue... Question: Which of the following is one of the concerns with biofabrication? Yes or no, is the answer "Scientists have some difficulty in getting the blood to the replacement tissue."?
No

Article: Hans was an honest fellow with a funny round good-humored face. Living alone, every day he worked in his garden. In all the countryside there was no garden so lovely as his. All sorts of flowers grew there, blooming in their proper order as the months went by, one flower taking another flower's place, so that there were always beautiful things to see, and pleasant odors to smell. Hans had many friends, the most devoted being the Miller. So devoted was the rich Miller to Hans that he'd never go by his garden without plucking a large bunch of flowers or a handful of sweet herbs, or filling his pockets with fruits. The Miller used to talk about noble ideas, and Hans nodded and smiled, feeling proud of having such a friend. The neighbors thought it strange that the rich Miller never gave Hans anything in return, though he had hundreds of sacks of flour, many cows and sheep, but Hans never troubled his head about these, and nothing gave him greater pleasure than to listen to all the wonderful things about the unselfishness of true friendship. In spring, summer, and autumn Hans was very happy, but when winter came, and he had no fruit or flowers to sell, he suffered from cold and hunger. Though extremely lonely, the Miller never came to see him then. "There's no good in going to see Hans while the snow lasts." The Miller said to his wife, "When people are in trouble they shouldn't be bothered. So I'll wait till the spring comes when he's happy to give me flowers." "You're certainly very thoughtful," answered his wife, "It's quite a treat to hear you talk about friendship." "Couldn't we ask Hans up here?" said their son. "I'll give him half my meal, and show him my white rabbits." "How silly you are!" cried the Miller. "I really don't know what's the use of sending you to school. If Hans came up here, and saw our warm fire, our good supper, and our red wine, he might get envious, and envy is a most terrible thing, and would spoil anybody's nature. I am his best friend, and I'll always watch over him, and see that... Question: From the passage, we can learn that Hans _ . Yes or no, is the answer "admired the Miller very much"?
No

Article: One might expect that the ever-growing demands of the tourist trade would bring nothing but good for the countries that receive the holiday-makers. Indeed, a rosy picture is painted for the long-term future of the holiday industry. Every month sees the building of a new hotel somewhere, and every month another rock-bound Pacific island is advertised as the 'last paradise on earth'. However, the scale and speed of this growth seem set to destroy the very things tourists want to enjoy. In those countries where there was a rush to make quick money out of sea-side holidays, over-crowded beaches and the concrete jungles of endless hotels have begun to lose their appeal. Those countries with little experience of tourism can suffer most. In recent years, Nepal set out to attract foreign visitors to fund developments in health and education. Its forests, full of wildlife and rare flowers, were offered to tourists as one more untouched paradise. In fact, the nature all too soon felt the effects of thousands of holiday-makers traveling through the forest land. Ancient tacks became major routes for the walkers, with the consequent exploitation of precious trees and plants. Not only can the environment of a country suffer from the sudden growth of tourism. The people as well rapidly feel its effects. Farmland makes way for hotels, roads and airports; the old way of life goes. The one-time farmer is now the servant of some multi-national organization; he is no longer his own master. Once it was his back that bore the pain; now it is his smile that is exploited. No doubt he wonders whether he wasn't happier in his village working his own land. Thankfully, the tourist industry is waking up to the responsibilities it has towards those countries that receive its customers. The protection of wildlife and the creation of national parks go hand in hand with tourist development and in fact obtain financial support from tourist companies. At the same time, tourists are being encouraged to respect not only the countryside they... Question: The example of Nepal is used to suggest _ . Yes or no, is the answer "it suffers from the heavy flow of tourists."?
No