user: Write a multi-choice question for the following article, with the given choices and answer: Article: Surfing--the art of riding a wave on a pointed board--is the wildest, fastest natural water sport known to man. In recent years, it has developed into a major sport around the world, from Australia to South Africa. Australians brave  men--eating sharks to ride the green waves Down Under, Hawaiian experts risk(...) their lives on huge, thirty foot swells  against the wind of Oahu; Californians of all ages go out the year-round. In the winter, surf-riders put on life-suits to ride grave waves so cold that their flesh turns blue. Surfing is no sport for weak persons. Swimming a quarter of a mile or more, and pushing a surfboard out to where the swells are just right for riding, can be real work. Then, at exactly the right moment, you climb up the wave and go fast across the face of a powerful swell with the white water jumping at your feet. The huge wave bites at your shoulder, threatening  at any moment to smash your flat. In the next several seconds, a cool head and lightning--quick action back to the pressure of the attacking wave will bring your board under control for that great ride down the back of the great, green mountain of water. Once on the beach, you know why surfing is growing in popularity as an international sport, and you're glad to be a member of this new water world. Options: A is not an easy sport B can be done by anyone C should be done by everyone D does not require courage Answer: A is not an easy sport Question:
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Answer: The author believes that surfing   _  .


Write a multi-choice question for the following article, with the given choices and answer: Article: You may have heard the popular saying, "there are always more fish in the sea". But as many new studies show, fish populations are changing, and not necessarily for the better. Consider the case of big, predatory   fish. These giants, like sharks and cod  , eat other smaller fish. Big fish are an important part of the marine ecosystem   because they keep down the numbers of smaller fish. Without fish that eat other fish, populations of smaller swimmers would increase, eating more plants, and leaving less vegetation for other creatures, including future fish. As fierce as predators can be, they're no match for fishing technology. Many people love to catch predatory fish like sharks, cod and tuna, and new studies suggest that over-fishing is threatening these creatures near the top of the marine food chain. In one study, Villy Christensen and his colleagues looked at 200 past studies of marine life to learn how fish populations have changed over time. Christensen reported that between 1910 and 1970, the numbers of big predators decreased slowly, and that in 1970 their populations really started to drop. Around that time, fishing ships began using new tools that led to more fish being caught. The numbers have been falling quickly ever since. Reg Watson looked at the problem from the perspective of the fishermen. In the middle of the 20thcentury, Watson reported, fishing boats didn't go far from home, and most fish were caught near the shore. That was no longer true by the 1980s. By then, fishing had moved farther from shore, into the open oceans, and was helped by the development of new technologies. But since the 1990s, something has changed. Despite new technologies and more efforts, fishing operations have not continued to develop. Scientists study historical data to understand the present, and this research is needed to forecast the future of fish and fishing. And the forecast doesn't look good: large predator fish are becoming harder to find, and soon may disappear. Options: A It may soon be difficult to find large predator fish. B It will cost much more in the future to catch big fish. C Smaller fish still give the fishing industry a bright future. D It is tough for researchers to forecast the future of fish. Answer: A It may soon be difficult to find large predator fish. Question:
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Answer: Which of the following would scientists most probably agree with?


Write a multi-choice question for the following article, with the given choices and answer: Article: Venice is the "Queen" of the Adriatic Sea  . Every year thousands of people from all over the world travel to Italy to visit the city. Do you know why they like to go there for a visit? Venice is a very beautiful city. It is quite different from other cities in the world. There aren't any roads and streets in the city. So there aren't any cars and buses. There are many canals in the city. There is one big canal and one hundred and seventy-seven small canals. People move up and down the canals in boats to go to work, go shopping or visit their friends. But Venice is sinking. It is going down and the water is going up. In 2040Venice will be under water, The Adriatic Sea will cover the city. The Venetians  love their city and want to stay there. So they want to save Venice? They can build some strong huge walls and gates in the sea. The gates will close to keep too much water out. Thus Venice will not sink. Options: A a very beautiful woman of the Adriatic Sea. B the most important woman in Italy. C a very important and beautiful place of the Adriatic Sea. D the most important city in Italy. Answer: C a very important and beautiful place of the Adriatic Sea. Question:
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Answer:

assistant: From this short article we know Venice is  _  .