Read the following article and select the best answer. Article: Farming is moving indoors, where the sun never shines, where rainfall is irrelevant and where the climate is always right. The perfect crop field could be inside a windowless building with controlled light, temperature,humidity,air quality and nutrition. It could be in a New York high- rise or a complex in the Saudi desert. It may be an answer to the world's food problems. The world already is having trouble feeding itself. Half the people on Earth live in cities, and nearly half of those - about 3 billion - are hungry or ill-fed. Food prices, currently increasing, are badly affected by dryness, floods and the cost of energy required to plant, harvest and transport it. And prices will only get more unstable. Climate change makes long-term crop planning uncertain. Farmers in many parts of the world already are using water available to the last drop. And the world is getting more crowded: by mid-century, the global population will grow from 6.8 billion to 9 billion. To feed so many people may require expanding farmland at the expense of forests and wilderness, or finding ways to greatly increase crop output. Gertjan Meeuws and three other Dutch bioengineers grow vegetables and house plants in closed and regulated environments. In their research station, water flows into the pans when needed, and the temperature is kept constant. Lights go on and off, creating "day" and "night", but according to the rhythm of the plant. Meeuws says a building of 100 square meters and layers of plants could provide a daily diet of 200 grams of fresh fruit and vegetables for the entire population of Ken Bosch, about 140,000 people. Their idea isn't to grow foods that require much space, like corn or potatoes. Sunlight is not only unnecessary but can be harmful. Plants need only specific wavelengths of light to grow. Their growth rate is three times faster than under greenhouse conditions. They use about 90 percent less water than outdoor agriculture. And city farming means producing food near the consumer, so there's on need... Question: According to the text, Gertjan Meeuws' farming _ . - can be used for corn production - is much like greenhouse farming - is adaptable to any environment - uses more water than outdoor farming
is adaptable to any environment

Read the following article and select the best answer. Article: When Johnson called again, the manager received him very politely. "That is a most remarkable oil you brought us, Mr Johnson," he said. Johnson nodded his smooth, dark head. That was something he knew very well. "I've never seen anything like it," the manager admitted. Johnson nodded again. "No?" he said politely. Then he added, "But I think you will, sir. A very great deal of it." He appeared to think for a moment. "I think you will find it will be on sale seven, perhaps, eight years from now." He smiled. The manager thought that was uncertain. He said, "It is better than our fish oils. I admit that." "So I am told, sir," agreed Johnson. "Have you any plans to produce it yourself, Mr Johnson?" Johnson smiled again. "Would I be showing it to you if I had?" "We might add some chemicals to one of our own fish oils," said the manager. "It would be expensive to do that, even if you could." Johnson said gently. "Besides," he added, "I am told that this oil will be much cheaper than your best fish oils. Cheaper than any vegetable oil, in fact." "Perhaps," said the manager. "Well, I suppose you want to make an arrangement, Mr Johnson, Shall we discuss it?" "Of course," said Johnson. "There are two ways of dealing with a situation of this sort. The usual one is to prevent it altogether or at least to delay it as long as possible. That is, of course, the best way," The manager nodded. He knew plenty about all that. "But I am so sorry for you, because, you see, that is not possible this time." The manager had his doubts, but all he said was an inquiring(asking), "Oh?" "The other way," continued Johnson, "is to produce yourself before the trouble starts." Question: Johnson expressed his regret that the manager _ . - could not stop the new oil being made - would never know how to make it - had spent a lot of money on it - didn't know enough about it
could not stop the new oil being made

Read the following article and select the best answer. Article: Considered one of Europe's two "bicycle capitals" along with Amsterdam, Copenhagen counts more bicycles than people and cycling is so popular that its numerous bike paths can become crowded. Two-wheeler traffic jams are especially regular on the main Noerrebrogade road used by around 36,000 cyclists a day. "You have to elbow your way in to go forward and some cyclists aren't always thoughtful," complains 22-year-old university student Lea Bresell. The creation of bike highways "comes right on time", says Danish Cyclist Federation Spokesman Frits Bredal. "Copenhagen's roads are overloaded with people who want to ride their bicycles in all kinds of weather," he says. "If in the 1960s Danes viewed the car as the symbol of freedom, the bicycles have supposed that role today," Bredal says. "It's a _ of transportation used by all social classes, even politicians ride bikes," he says. It is on crowded Noerrebrogade--the busiest bicycle street in Europe, according to the cyclist association--that city planners have decided to build the first of Copenhagen's environmentally friendly roads. The jammed bike paths will be widened up to four metres on either side of the road, which itself will be reserved for bikes only. The idea is to make Noerrebrogade "Europe's great cycling street", says Andreas Roehl, Copenhagen government's bicycle program manager who is also known as "Mr. Bike". But Roehl is not content with making life easier for Copenhagen's inner-city cyclists: He wants to get suburbanites out of their cars and onto two wheels as well. His goal is to hike the percentage of suburban commuters cycling to and from the city from the 37 percent it is today to 50 percent by 2015. Question: Why do people in Copenhagen want to ride their bicycles in all kinds of weather? - Because the price of petrol has been going up all the time. - Because the bicycle is viewed as the symbol of freedom nowadays. - Because it's hard for people to find parking space in crowded streets. - Because politicians ride bikes and commuters enjoy following them.
Because the bicycle is viewed as the symbol of freedom nowadays.