input question: Write a multi-choice question for the following article, with the given choices and answer: Article: There are various ways in which individual economic units can interact with one another. Three basic ways may be described as the market system, the administered system, and the traditional system. In a market system individual economic units are free to interact among each other in the marketplace. It is possible to buy commodities from other economic units or sell commodities to them. In a market, transactions may take place via barter or money exchange. In a barter economy, _ goods such as automobiles, shoes, and pizzas are traded against each other. Obviously, finding somebody who wants to trade my old car in exchange for a sailboat may not always be an easy task. Hence, the introduction of money as a medium of exchange eases transactions considerably. In the modern market economy, goods and services are bought or sold for money. An alternative to the market system is administrative control by some agency over all transactions. This agency will issue commands as to how much of each good and service should be produced, exchanged, and consumed by each economic unit. Central planning may be one way of administering such an economy. The central plan, drawn up by the government, shows the amounts of each commodity produced by the various firms and allocated to different households for consumption. This is an example of complete planning of production, consumption, and exchange for the whole economy. In a traditional society, production and consumption patterns are governed by tradition; every person's place within the economic system is fixed by parentage, religion, and custom. Transactions take place on the basis of tradition, too. People belonging to a certain group or caste may have an obligation to care for other persons, provide them with food and shelter, care for their health, and provide for their education. Clearly, in a system where every decision is made on the basis of tradition alone, progress may be difficult to achieve. An inactive society may result. Options: A rapid speed of transactions B misunderstandings C inflation D difficulties for the traders Answer: D difficulties for the traders Question:???
output answer: According to the passage, a barter economy can generate _ .

input question: Write a multi-choice question for the following article, with the given choices and answer: Article: FAQs (Frequently Asked Questions) about visiting Hong Kong: Q: When is the best time to visit Hong Kong? A: Hong Kong is an all-year round destination. It enjoys a mild climate from the middle of September to the end of February, while the weather from May to mid-September can be hot. About 80% of Hong Kong's rainfall occurs between May and September, with August usually the wettest month. Q: Do I need a visa to visit Hong Kong? A: Visitors from most countries can enter Hong Kong without a visa for periods of seven days to 180 days, depending on nationality. You may check with the Hong Kong Immigration Department for details of visa requirements. Q: How is the local public transport? A: Hong Kong has an excellent public transport system, with most transportation air-conditioned. Depending on where you are going, you have a choice of MTR, trains, buses, trams, ferries and taxies. The clean and efficient means of transport cover all areas of Hong Kong, and have signs in English and Chinese. Q: Is Hong Kong safe for visitors? A: Yes. Hong Kong is one of the safest cities in the world even at night, when people may walk alone with confidence. To ensure your stay is a pleasant one always take care of your belongings. Q: Is English widely spoken? A: Yes, particularly in places frequently visited by visitors. You should have no problem communicating with people in most hotels, shops, restaurants and even some taxies. Options: A Four. B Five. C Six. D Seven. Answer: C Six. Question:???
output answer: How many means of transport are mentioned in the answer of Questions 3?

input question: Write a multi-choice question for the following article, with the given choices and answer: Article: It's the worst event in human being's nautical history , six times more deadly than the Titanic . When the German cruise ship Wilhelm Gustloff was hit by torpedoes fired from a Russian submarine in the final winter of World War II , more than 10,000 people - mostly women , children and old people fleeing the final Red Army push into Nazi Germany - were packed aboard . An ice storm had turned the decks into frozen sheets that sent hundreds of families sliding into the sea as the ship tilted and began to go down . Others desperately tried to put lifeboats down . Some who succeeded fought off those in the water who had the strength to try to claw their way aboard . Most people froze immediately . " I'll never forget the screams , " says Christa Ntitzmann , 87 , one of the 1,200 survivors . She recalls watching the ship , brightly lit , slipping into its dark grave-and into seeming nothingness , rarely mentioned for more than half a century . Now Germany's Nobel Prize-winning author Gtinter Grass has revived the memory of the 9,000 dead , including more than 4,000 children-with his latest novel Crab Walk , published last month . The book ,which will be out in English next year , doesn't dwell on the sinking : its heroine is a pregnant young woman who survives the catastrophe only to say later : " Nobody wanted to hear about it , not here in the West ( of Germany ) and not at all in the East . " The reason was obvious . As Grass put in a recent interview with the weekly Die Woche : " Because the crimes we Germans are responsible for were and are so dominant , we didn't have the energy left to tell of our own sufferings . " The long silence about the sinking of the Wilhelm Gustloff was probably unavoidable - and necessary . By unreservedly owning up to their country's monstrous crimes in the Second World War , Germans have managed to win acceptance abroad , _ the neo-Nazis at home and make peace with their neighbors . Today's unified Germany is more prosperous and stable than at any time in its long , troubled... Options: A By presenting the horrible scene of the torpedo attack . B By describing the ship's sinking in great detail . C By giving an interview to the weekly Die Woche . D By illustrating the survival of a young pregnant woman . Answer: D By illustrating the survival of a young pregnant woman . Question:???
output answer:
How does Gunter Grass revive the memory of the Wilhelm Gustloff tragedy ?