input question: Write a multi-choice question for the following article: Article: How would you like to sleep with one half your brain asleep and the other half awake? Dolphins sleep this way. Recently, scientists at Indiana State University have discovered that ducks sleep this way too. They found that ducks sleep half awake so they can rest and watch for danger at the same time. After putting their ducks in a row and videotaping them, some researchers found ducks on the end of each row spent more time asleep with one eye open, apparently looking for _ "The more the ducks felt threatened, the more they slept with one eye open," said lead author Niels C. Rattenborg, a graduate student at Indiana State University, Terre Haute. "The unique aspect is not that they do it, but that they control it. When they sleep at the edge of a group, they tend to realize greater danger, so they spend more time sleeping with one half of their brain." Ducks with one eye open were still awake enough to detect predators, said the authors of the study, which appears today in the journal Nature. The researchers studied four groups of four ducks held in plastic boxes, which were arranged in a row. Ducks on the end were found to sleep with one eye open 31.8 per cent of the time, compared to 12.4 percent of the time for ducks in the central position. Also, ducks in the central position did not open one eye more than the others, while ducks on each end kept the eye facing away from the group open 86.2 per cent of the time. Brain wave readings of the ducks showed that the half of the brain receiving signals from the closed eye indicated that half of the brain was sleeping. Signals from the half of the brain receiving signals from the open eye showed a state between fully awake and asleep.???
output answer: Question: Ducks at the end of each row sleep with one eye open because _ .Options:A they are looking for foodB they are watching out for dangerC they want to enjoy the sceneryD they are unique in their sleeping habitAnswer:B

input question: Write a multi-choice question for the following article: Article: The earth is the only planet that scientists think has life. Why does the earth have life while the other planets don't? For one thing, the earth is just the right temperature. As from the sun, the earth seems to be just the right distance away. The planets which are closer to the sun are hot that their surfaces bake in the sun. The farthest planets are cold balls. When the earth developed -- which scientists believe may have happened about 4 billion years ago -- many gases covered the earth. The gases caused the earth to be hot. But something wonderful happened. The temperature was just right for thick clouds to form. It rained very hard for a very long time. This gave the earth its oceans. Water made it possible for plants to grow. The plants created oxygen in the atmosphere. Oxygen is the gas that humans and animals breathe. Only one other planet in the solar system seems to be something like the earth. That planet is Mars . Mars is smaller than the earth, and it is quite a bit cooler. But it is not too cold for humans. On some days, the temperatures are as low as a winter day in the northern United States. If you wore a special space suit, you could walk around on Mars. You would have to bring your own air to breathe, the air on Mars is too thin to breathe. Mars has the largest volcano in the solar system. It is sixteen miles high. The highest volcano on the earth is five miles high. The most unexpected sight on Mars is dried up river beds. Scientists believe that Mars was once much better than it is now. Does this mean there could have been living things on Mars? Scientists are not sure, but there has been no sign so far.???
output answer: Question: Which of the following about the Mars is NOT true?Options:A There could have been living things on Mars.B Mars has the largest volcano in the solar system.C There is almost no oxygen in the air on Mars.D Mars is smaller than the earth, and it is quite a bit cooler.Answer:A

input question: Write a multi-choice question for the following article: Article: While there are many fascinating countries in the world to visit, I think there is something more adventurous, exotic and romantic about visiting an island country. Take a look at some breathtakingly beautiful island countries in the world, which everyone should certainly visit at least once in his lifetime. Malta Malta is a beautiful southern European country in the Mediterranean Sea, which has a rich history and culture. There are amazing sky-high cliffs to climb, splendid temples to explore and lots of wonderful places to go scuba-diving. In fact, there are plenty of interesting things to see and to do in Malta and this island country has something for everyone. The historic part of Malta is shown in its incredible architecture, great walled cities, and many underground tunnels. Fiji Fiji is a fabulous island that has plenty of surprises for any adventurous travelers. It is famous for the world's best surf scenes, and many surfing enthusiasts travel to Fuji yearly to ride the great waves. Well, if surfing is not for you and you love sitting on the beach and relaxing, hiking or seeing breathtaking waterfalls, Fiji is certainly the best island country to visit. Maldives Not only is Maldives one of the most beautiful island countries, but it is one of the most popular honeymoon destinations. Situated in the middle of the Indian Ocean, Maldives is made up of a series of ancient coral reefs that grow up along the sides of ancient volcanoes, with fascinating beaches and luxurious resorts.???
output answer: Question: What is the special feature about Fiji?Options:A You can take a yacht free in this country.B There are sky-high cliffs to climb.C It is surfing enthusiasts' favorite island country.D If you once visited it, you wouldn't like to go there again.Answer:C

input question: Write a multi-choice question for the following article: Article: Do you know mulch? Mulch is a protective cover of material that is spread on top of soil. It is usually made out of organic material, like crop waste. Farmers may keep the remains of corn or other crops on top of the soil. This creates mulch on the soil surface. The plant remains help protect the soil against wind and water damage. Mulching is one of the best things people can do for their plants. It also helps keep the soil from getting dry, and reduces the need for watering plants. It also limits temperature changes in the soil. And it stops unwanted plants, or weeds, from growing. Organic mulch improves the condition of soil. As the mulch breaks down, it provides material which keeps the soil from getting hard. This improves the growth of roots and increases the movement of water through the soil. It also improves the ability of the soil to hold water. Organic mulch contains nutrients for plants. It also provides good environment for earthworms and other helpful living things in the soil. It is easy to find organic mulch materials. Cut-up leaves and small pieces of tree bark can be used. Grass cuttings are also a good mulch for plants. Mulch from news- papers works well in controlling weeds. The best time to add mulch depends on your goal. Mulch provides a thick barrier between the soil and the air. This helps to reduce temperature changes in the soil. As a result, mulched soil will be cooler than other soil in the summer. In winter, the mulched soil may not freeze as deeply as other soil. The best time is after the ground has frozen, but before the coldest weather arrives. Spreading mulch before the ground has frozen may attract small animals searching for a warm place to spend the winter. Delaying the spreading should prevent this problem. The animals will probably find another place to live.???
output answer:
Question: The following can be used as organic materials to make mulch EXCEPT _ .Options:A tree barksB plasticC grass cuttingsD cut-up leavesAnswer:B