Question: Write a multi-choice question for the following article, with the given choices and answer: Article: A new study links heavy air pollution from coal burning to shorter lives in northern China. Researchers estimate that the half-billion people alive there in the 1990s will live an average of 5 years less than their southern counterparts because they breathed dirtier air. China itself made the comparison possible: for decades, a now-discontinued government policy provided free coal for heating, but only in the colder north. Researchers found significant differences in both _ pollution of the air and life expectancy in the two regions. While previous studies have found that pollution affects human health, "the deeper and ultimately more important question is the impact on life expectancy," said one of the researchers, Michael Greenstone, a professor of environmental economics at Massachusetts Institute of Technology. "This study provides a unique setting to answer the life expectancy question because the(heating) policy dramatically changes pollution concentrations ,,,Greenstone said in an email. "Further, due to the low rates of migration in China in this period, we can know people's exposure over long time periods," he said. The policy gave free coal for fuel boilers to heat homes and offices to cities north of the Huai Rivwhich divides China into north and south. It was in effect for much of the 1950-198,0 period of central planning, and, though discontinued after 1980, it has left a legacy in the north of heavy coal burning, which releases particulate pollutants into the air that can harm human health. Researchers found no other government policies that treated China's north differently from the south. The researchers collected data for 90 cities, from 1981 to 2000, on the annual daily average concentration of total suspended particulates. In China, those are considered to be particulates that are 100 micrometers or less in diameter, sent out from sources including power stations, construction sites and vehicles. Among them, PM2.5 is of especially great health concern because it can go deep into the... Options: A power stations B construction sites C the free heating policy D gases from vehicles Answer: C the free heating policy Question:
Answer: According to Greenstone, _ greatly contributed to the high pollution concentrations in North China.

[Q]: Write a multi-choice question for the following article, with the given choices and answer: Article: LONDON, England(CNN)-- The youngest person to sail solo around the world returned home Thursday from his 30,000-mile, 282-day ocean journey. Mike Perham, 17, sailed into Lizard Point in Cornwall, the southernmost point in Britain, at 9:47 a.m., his race team said. "It feels ly brilliant," Mike told CNN by phone hours before crossing the finish line. "I'm really, really excited to be going across the line at last. It doesn't feel like long since I crossed it first." Mike set off on his round-the-world trip on November 18, 2008. He has been sailing his yacht, TotallyMoney.com, single-handedly, though a support team has been sailing next to him along the way. ks5u The teen has now achieved the title of Youngest Sailor to Circumnavigate the Globe Solo, according to the Guinness World Records. Mike learned how to sail when he was seven years old from his father, Peter and at age 14, he sailed across the Atlantic alone. The teenager's school -- which Mike describes as "highly supportive" of his trip -- has redesigned his coursework to fit in with his trip. It also gave him some coursework to do during "quiet moments," according to Mike's Website. There haven't been many of those quiet moments. Repeated autopilot failures forced him to stop for repairs in Portugal, the Canary Islands, South Africa, and twice in Australia, according to his Web site. Bad weather in the Southern Ocean -- between Australia and Antarctica -- forced Mike to battle 50ft waves and 57 mph winds. He said at one point, a "freak wave" picked up the boat and turned it on its side. "My feet were on the ceiling at the time," he told CNN. "That was a really hairy moment, and I was certainly thinking, 'Why am I here?' But we took the sails off and the day after I thought, 'This is brilliant!'" Mike describes his father as his biggest hero, always supportive of what he wanted to achieve. Peter Perham said he wasn't too worried about his son facing dangerous situations at sea, as long as he knew what to do and stayed safe. Options: A the English school is the same as ours B the English school doesn't care for students C the English school has a humane management D the English school gives students a lot of course work Answer: C the English school has a humane management Question:
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[A]: We can infer from the passage that _ .

input: Please answer the following: Write a multi-choice question for the following article, with the given choices and answer: Article: Greece today is a small country in southeastern Europe. The population is about nine million, and the capital city is Athens. High mountains with rich, fertile land between them cover northern Greece. The hilly southern part is a peninsula called the Peloponnesus. Hundreds of islands surround the mainland. The largest island is Crete. No part of the nation is far from water. The Ionian Sea and the Aegean Sea _ deep bays and gulfs into the long coastline. Greece has been a seafaring nation for centuries, and Greece is very well known for its shipping industry. More than three thousand years ago, the Greek people developed a very sophisticated society. They have a great civilization, one of the greatest that the Western would have ever seen. Greek architecture, thinking and art influenced other languages, including English. For example, the English words alphabet, democracy, and arithmetic come from Greek. Today Greece is one of the most popular nations with the tourists who visit Europe. Thousands of people are attracted to the country because of its beautiful scenery, magnificent ancient buildings, and its excellent summer weather. Options: A north B east C south D west Answer: A north Question:
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output:
We may conclude that most of the food is grown in the _ .