input with options: Read the following article and answer the question. Article: Batteries can power anything from small sensors to large systems.While scientists are finding ways to make them smaller but even more powerful, problems can arise when these batteries are much larger and heavier than the devices themselves.University of Missouri(MU) researchers are developing a nuclear energy source that is smaller, lighter and more efficient. "To provide enough power, we need certain methods with high energy density ",said Jae Kwon, assistant professor of electrical and computer engineering at MU."The radioisotope battery can provide power density that is much higher than chemical batteries." Kwon and his research team have been working on building a small nuclear battery, presently the size and thickness of a penny, intended to power various micro / nanoelectromechanical systems (M/NEMS).Although nuclear batteries can cause concerns, Kwon said they are safe. "People hear the word 'nuclear' and think of something very dangerous," he said, "However, nuclear power sources have already been safely powering a variety of devices, such as pace-makers, space satellites and underwater systems." His new idea is not only in the battery's size, but also in its semiconductor .Kwon's battery uses a liquid semiconductor rather than a solid semiconductor. "The key part of using a radioactive battery is that when you harvest the energy, part of the radiation energy can damage the lattice structure of the solid semiconductor," Kwon said, "By using a liquid semiconductor, we believe we can minimize that problem." Together with J.David Robertson, chemistry professor and associate director of the MU Research Reactor, Kwon is working to build and test the battery.In the future, they hope to increase the battery's power, shrink its size and try with various other materials.Kwon said that battery could be thinner than the thickness of human hair. Question: The text is most probably a _ . Answer:
OPTIONS:
- science news report
- book review
- newspaper ad
- science fiction
output: science news report

input with options: Read the following article and answer the question. Article: On the day of college graduation,I told my friends and family the news:I was leaving the country I had lived in since childhood.''I just need a change,"I told them,but there was more.I was running from heartbreak.My relationship with the United States is the most tough one I have ever had,as a country I loved and believed in did not love me back. Back in the 90's,my mother brought me from our home in the Caribbean islands to the U.S.when I was 4 years old.She worked as a live-in nanny for two years,playing mommy for white kids whose parents had better things to do.She didn't believe that nanny meant maid,and did whatever was asked of her.She was thirsty to embrace her American dream,hoping that her children would be educated and she might have nannies of her own. That was our path--get a "good education." When the neighborhoods with quality schools became too expensive for my mom to afford as a single parent,we went across the United States with GreatSchools. net as our compass:New Jersey,elementary school;Texas,middle school;Florida,high school;New York City,private university. For a long time I survived by covering myself in all kinds of labels so that people would ignore the color1 of my skin,yet I existed on the edge of ugly,ignorant and uncuhured."Black people don't really know how to swim,"a white lady told me when I worked as a swim instructor at my neighborhood's pool."The black children don't like to read very much," I overheard one librarian discussing with another while l sat down reading a book a couple feet away. I was never able to make America my home.When I stripped myself of the labels painfully one by one,beneath them there is a wounded color1ed woman who refuses to be faceless anymore.My face may be disgusting to some since it bears proof that race continues to be a problem.My hope is that it will force Americans to reexamine their "post--racial" beliefs. Question: The author's attitude towards the United States on race problem is_. Answer:
OPTIONS:
- supportive
- positive
- neutral
- negative
output: negative

input with options: Read the following article and answer the question. Article: Last year, CCTV journalists approached pedestrians with their cameras, held a microphone to their mouth and asked a simple question, "Are you happy?" The question has caught many interviewees off guard. Even Mo Yan, who just won a Nobel Prize, responded by saying, "I don't know". While the question has become a buzz phrase and the Internet plays host to heated discussions, we ask: What exactly is happiness? And how do you measure it? In the 1776 US Declaration of Independence, Thomas Jefferson set in writing the people's unalienable right to "Life, Liberty and the Pursuit of Happiness". 235 years on, Wen Jiabao told the nation, "Everything we do is aimed at letting people live more happily." At National People's Congress, officials agreed that increasing happiness would be a top target for the 12th five-year plan. US psychologist Ed Diener, author of Happiness: Unlocking the Mysteries of Psychological Wealth, describes happiness as " a combination of life satisfaction and having more positive than negative emotions", according to US broadcasting network PBS. This may sound straightforward enough, but it still doesn't explain what determines people's happiness. Many argue that happiness is _ and that there is no single source. It also means different things to different people. For some, happiness can be as simple as having enough cash. Researchers believe happiness can be separated into two types: daily experiences of hedonic well-being; and evaluative well-being, the way people think about their lives as a whole. The former refers to the quality of living, whereas the latter is about overall happiness, including life goals and achievements. Happiness can cross both dimensions. Li Jun, a psychologist and mental therapy practitioner at a Beijing clinic, says, "Happiness can mean both the most basic human satisfaction or the highest level of spiritual pursuit. It's a simple yet profound topic." Chen Shangyuan, 21, a junior English major at Nanjing University of Aeronautics and Astronautics, said his idea of... Question: According to the passage, the writer may most likely agree that _ . Answer:
OPTIONS:
- CCTV journalists are concerned about people's happiness out of sympathy
- the question has led to heated discussions about who are the happiest people in China
- Bhutan's new index shows that people there are the happiest in the world
- it is not easy for us to decide what determines people's happiness
output:
it is not easy for us to decide what determines people's happiness