input question: Write a multi-choice question for the following article, with the given choices and answer: Article: Today most Chinese teenagers are happy to be favored by two parents and four grandparents in their families. But have you ever thought about how to take care of four to twelve old people when you grow up and get married? This could be a problem for most Chinese youths as China is entering a new stage of an aging society. An aging society refers to one where 10 percent or more of its population is over 60. By the end of 2007, Chinese over 60 years old have made up 11.7 percent of the nation's total population. "China is getting old before becoming rich,"said Cai Chuang, a professor at the Chinese Academy of Social Sciences. The population increase that has powered Chinese growth for three decades will give way over the next ten years to a rapid aging of the society. This will lead to weaker economic growth, because of a lack of labor resources. As a result of the family planning policy, it is expected that the country's total working population will decrease after 2015. China is not the only country getting old. More that 60 countries have become aging societies and one in three people in the European Union is a senior citizen. However, experts said that China doesn't have a highly developed social security network to support the old. Social security is an insurance program protecting those in need, including the old, the disabled and others. Options: A less that 10% of its population is over 60 B 10% or more of its population is over 60 C there are four old people in a family D most of its population is over 60 Answer: B 10% or more of its population is over 60 Question:???
output answer: An aging society is a society that _ .

input question: Write a multi-choice question for the following article, with the given choices and answer: Article: Mail lay scattered across the kitchen table. I couldn't put off sorting through it any longer. I checked the envelopes, putting aside the ones addressed to my husband. It had been over three years since Bob had died. To friends and family it looked like I had moved past the worst of my sorrow. I took care of my house, socialized and kept up with community. On the outside everything appeared to be normal. But inside I was anything but I worried I would never get better, never be myself again. They say sorrow has no set time limit, but I was so tired of feeling empty and hopeless. My sorrow was sharp and fresh as ever. It was like a wall of pressure in my chest, pressing my heart. I picked up a piece of Bob's mail and held it out to tear in half, but stopped myself from cutting up the envelope. The letter was from an organization that funded a Haitian orphanage called _ . Its founder, Carol Hawthorne, had given a presentation at our church. Bob and I had donated, and Bob ended up on the mailing list to receive the newsletter with updates on the children. I hadn't read one since Bob died. But just three months before, in January 2012, the country had been hit by a terrible earthquake. In my depressed state, it hadn't even occurred to me to wonder whether the orphanage had survived. I opened the newsletter and was surprised to find out that My Father's House was still standing. Of course now it was more crowded than ever. At the bottom of the page was an announcement about an upcoming trip to visit the orphanage in person. "I should go." The thought wouldn't leave me. I contacted Carol Hawthorne."What would I do if I go?" I asked."Build houses?" "The Haitian people there are eager to work and they know what they're doing," said Carol. "What they need are raw materials, and we provide them. We also visit with the children. We go to clinics and schools, pass out supplies. You'll be very busy, I promise!" I reserved a seat but didn't mention it to any of my friends. Just a few weeks later, I was at the airport... Options: A The writer decided to settle down in Haiti at last. B The writer overcame her loss by helping others. C The writer taught the children to sing in English. D The writer picked up Creole during her stay there. Answer: B The writer overcame her loss by helping others. Question:???
output answer: What can we conclude from the passage?

input question: Write a multi-choice question for the following article, with the given choices and answer: Article: Most rain forests lie close to the equator ,where the climate is often mild and there are long hours of sunshine.The warmth of the land heats the air above,causing it to rise and tiny drops of water to fall as rain.The rainfall can reach at least 98 inches a year.This wet,warm world with plenty of sunlight is perfect for plants to grow,so the trees grow fast with green leaves all the year round.The trees themselves also have an effect on the climate.They gather water from the soil and pass it out into the air through their leaves.The wet air then forms clouds,which hang over the treetops like smoke.These clouds protect the forest from the daytime heat and night-time cold of nearby deserts,keeping temperatures fit for plant growth. Rain forests slightly farther away from the equator remain just as warm,but they have a dry season of three months or more when little rain falls.Tree leaves fall during this dry season and new leaves grow when the wet season or monsoon begins.Thus these areas are known as the "monsoon forest". Another type of rain forest grows on tropical mountains.It is often called the "cloud forest" because clouds often hang over the trees like fog. The rain forest is the ideal place for the growth of many different trees.Most of them depend on animals to eat their fruits and spread their seeds.When the fruits are eaten,the seeds inside them go undamaged through animals' stomachs and are passed out in their droppings.The seeds lying on the forest floor then grow into new trees. Options: A tree leaves are green all the time in the monsoon forest B there is a dry season in the cloud forest on tropical mountains C clouds help the plants in the rain forest near the deserts to grow D the formation of climate in the rain forest has little to do with the trees Answer: C clouds help the plants in the rain forest near the deserts to grow Question:???
output answer: We can learn from the passage that _ .

input question: Write a multi-choice question for the following article, with the given choices and answer: Article: Imagine putting some bacteria in the freezer and taking them out millions of years later to find that they are still alive. That would be similar to what happened recently, when scientists brought eight-million-year-old bacteria back to life -- simply by thawing them out. The ancient bacteria were found frozen in the world's oldest known tracts of ice, the glaciers of Antarctica. Professor Bidle and his colleagues found and revived two samples of bacteria from the glacial ice. The first was a hundred thousand years old, and the second was around eight million years old. The eight-million-year-old bacteria were alive. But their genes were seriously damaged from long exposure to cosmic ( ) radiation, which is higher at the earth's poles. Most of the bacteria in the samples probably blew over from African deserts, said Paul Falkowski, a scientist at prefix = st1 /RutgersUniversity. Once the bacteria landed on the glacier's snowy surface, they combined with the snow to form ice. "These ices are actually gene banks," he added. As glaciers and ice caps melt as a result of increasing global warming, large amounts of bacterial genetic material might be washed into the ocean. These bacteria might get incorporated into today's bacteria in the ocean, or living bacteria from the ice might also grow and have an important effect on the ecosystem. "How that's going to play out, we don't know," Bidle said. He and Falkowski plan to focus their future work on how current ice melting influences modem bacteria's genetic diversity. Options: A Ocean exploration. B A scientific plan. C A scientific discovery. D An interesting experiment. Answer: C A scientific discovery. Question:???
output answer:
What is the passage mainly about?