Q: Write a multi-choice question for the following article: Article: Could smells affect your lifespan? Female fruit flies rid of the ability to smell food outlive their peers.The sense of smell may be linked to the cellular ageing process in many other organisms--even people.A link has recently been found between sensory experiences and lifespan in both worms and flies.For example, Scott Pletcher, a biologist at the University of Michigan, found that eliminating fruit flies' ability to smell enabled them to live nearly 20 percent longer than flies with an intact sense of smell. Pletcher's team reasoned that food smells were the ones most likely to affect ageing, as nutrition and longevity are known to be linked in many organisms.To test the idea that food odors affect lifespan, Pletcher's team eliminated flies' ability to smell carbon dioxide, which is produced by some fly foods.They left the rest of the smelling system intact. This intervention had no effect on male flies, but the females lived 30 percent longer than normal.Pletcher thinks eliminating the ability to smell CO2may deprive flies of information about food availability.This could signal to cells that food is scarce, causing processes that promote survival.Indeed, his team found that the CO2-insensitive female flies stored extra fat and that both males and females immune to CO2were more resistant to stress than normal flies.Pletcher isn't sure why the change in his fruit flies only affected the lifespan of the females, but he suggests that females may simply be more sensitive to the odor of CO2. A smell or taste that stretches lifespan in humans could be a potential preventative for age-related disease, he adds.Although in fruit flies it appears to be the smell of CO2that affects ageing, he says that an analogue in humans might be a smell or taste linked to human food--or a lack of it.Matt Kaeberlein studies ageing at the University of Washington in Seattle. He cautions that we don't know whether ageing and smell are linked in mammals.But " we definitely undergo physiological changes in response to smelling...
A: Question: Which of the following best describes the passage as a whole?Options:A Female flies are insensitive to CO2.B Smells could affect humans' lifespan.C The sense of smell is vital to humans' health.D Female fmit flies can live longer than male flies.Answer:B

Question: Write a multi-choice question for the following article: Article: For every cup of coffee you made, about two spoons of grounds end up in the waste. That doesn't seem like a lot, but just think about the millions of coffees consumed around the world every single day, and you'll see the problem. Sure, some of those coffee grounds are recycled as fertilizer to enrich the soil or beauty products like face masks, but most will be buried into the ground. It was while considering this issue that German product designer Julian Lechner came up with a new way of recycling coffee grounds -- turning them into tableware. "We were always drinking coffee at university," Lechner remembers. "And that's how I started to wonder. What happens to all that coffee? It was all just getting thrown away." He began consulting with his professors about ways of using coffee grounds to create a solid material. "We tried combining with a lot of different things," Lechner said, "We even tried sugar. That was close, but basically it was a candy cup. It just kept melting after being used three times." The whole point was to make it last long, so Lechner and his partners went back to the institute to continue their research. Finally, after many failed experiments, they came up with a mix of coffee grounds and a biopolymer that seemed to behave the way Lechner had expected it. "The moment of knowing the cup would actually stand was super-exciting," he recalls. "It was wonderful to drink that first coffee out of the cup. It proved to be totally worth the wait." And his creation has proven commercially successful, which is just _ . The coffee cups are now present in ten shops across Europe, and the company can hardly keep up with demand, regularly selling out of its stock online. Lechner will soon launch a larger line of coffee grounds cups and also work on a travel mug. But those are just short-term plans, as Lechner hopes to one day use recycled coffee grounds to create all sort of useful stuff--like sheets and furniture in cafes and restaurants.
Answer: Question: What is the main idea of the passage?Options:A A new way of recycling coffee cups.B Commercial success from consuming coffee.C Recycling coffee grounds into stuff like coffee cups.D Different product designers of recycling coffee grounds.Answer:C

Question: Write a multi-choice question for the following article: Article: Singles' Day ---- the Chinese opposite of Valentine's Day has turned into a massive online shopping event. It is a day when single people are supposed to buy themselves presents. But there are sociological reasons behind China's "celebration" of single life. And the imbalance could have big consequences for the country. There were 34 million more men than women in China in 2011. Part of that is natural - usually there are 105 boys born for every 100 girls. But the Chinese gender ratio at birth is much more obvious. It was 116 boys to 100 girls in 2012. The one child policy is largely to blame. Brought in to limit population expansion, the policy allows only one child per family. But because male children are seen as more valuable, as well as more likely to support their parents in old age, some parents choose to have a son over a daughter. The result is that large numbers of men will likely never get married. In fact, one study has predicted that by 2030, 1 in 5 Chinese men in their 30s will never have married, while another states that 94% of unmarried people in China are men. Traditionally, China has seen high levels of marriage, usually among the young. Besides, the increased education and career opportunities for women have meant that marriages are happening later. It is also traditional that women often marry men of a higher socioeconomic status than themselves. So women at the top and men at the bottom find themselves alone. One study has even suggested a link between an imbalanced gender ratio and growth in violent crime in the country. Singles' Day can't solve all the problems China's singles face. Indeed, it is possible that it is causing even more problems, as men resort to increasingly risky lines of work to increase their chances of gaining money and thus a wife. I am worried that as money starts to overcome romance, there is evidence that China's marriage market is increasingly materialistic.
Answer:
Question: In 2012, if 50 girls were born, how many boys were probably born?Options:A 50.B 52.C 58.D 60.Answer:C