Question: I'm taking a test and have to guess the right answer to the question after the article. Article: Holding a cell phone against your ear or storing it in your pocket may be dangerous to your health. This explains a warning that cell phone manufacturers include in the small print that is often ignored when a new phone is purchased. Apple, for example, doesn't want iPhones to come closer to you than 1.5 centimeters; Research In Motion, BlackBerry's manufacturer, recommends 2.5 centimeters. If health issues arise from cell phone use, the possible effects are huge. Voice calls - Americans chat on cell phones 2.26 trillion minutes annually - earn $109 billion for the wireless carriers. Devra Davis, an expert who has worked for the University of Pittsburgh, has published a book about cell phone radiation, "Disconnect." The book surveys scientific research and concludes the question is not settled. Brain cancer is a concern that Ms. Davis examines. Over all, there has not been an increase in its incidence since cell phones arrived. But the average masks an increase in brain cancer in the 20-to-29 age group and a drop for the older population. "Most cancers have multiple causes," she says, but she points to laboratory research that suggests low-energy radiation could damage cells that could possibly lead to cancer. Children are more _ to radiation than adults, Ms. Davis and other scientists point out. Radiation that penetrates only five centimeters into the brain of an adult will reach much deeper into the brains of children because their skulls are thinner and their brains contain more absorptive fluid . No studies have yet been completed on cell phone radiation and children, she says. Henry Lai, a research professor in the bioengineering department at the University of Washington, began laboratory radiation studies in 1980 and found that rats exposed to radiation had damaged DNA in their brains. Ms. Davis recommends using wired headsets or the phone's speaker. Children should text rather than call, she said, and pregnant women should keep phones away from the abdomen . Question: Why is the warning in the small print? Options: A: They think people will not care about it. B: There is not enough space for the warning. C: They don't want the users to pay attention to it. D: The warning is not important at all.
Answer: C

Question: I'm taking a test and have to guess the right answer to the question after the article. Article: Online clothes shoppers will be told exactly what size is best. for them using new software which combines with their web camera or smart phone to form a"3D tape measure". Scientists from Surrey University and design experts from the London College of Fashion are developing a program which can take precise   waist, hip, chest and other measurements from camera images. Using the person's height as a starting point,the software will be able to build up a 3D image and estimate their size at various different points on the body, based on their overall proportions. The result will be a more accurate sizing guide than previous systems based on waist size or a "small/medium/large"scale, which rely on limited measurements and the buyer's perception of their own body size. Shoppers and retailers who choose to sign up for the project could save millions of pounds a year in postage costs by removing the need to order multiple sizes of the same garment  and send back ill-fitting clothes, researchers claimed. The project, sponsored by the Engineering and Physical Sciences Research Council(EPSRC), is expected to be brought to market within two years. After choosing an item, the shopper will activate the software, enter their height, stand in front of their webcam or smart phone in their underwear and take a photograph. The software will not store or transmit the image to the internet, but will use it to judge the person's dimensions at various points on their body. Philip Delamore of the London College of Fashion said:"The potential benefits for the fashion industry and for shoppers are huge. Currently, it's common for online shoppers to order two or three different sizes of the same item of clothing at the same time, as they're unsure which one will fit best." Question: Compared with the traditional sizing system, a 3D tape measure is  _  . Options: A: quicker B: more precise C: more beautiful D: more vivid
Answer: B

Question: I'm taking a test and have to guess the right answer to the question after the article. Article: It has been two years since China Daily last interviewed 31-year-old Zhang Chao.The micrograph enthusiast still wears the same hair style, even the same coat. But one thing is very different: He's become a celebrity in cyberspace almost overnight, after his pictures, which show what the smog in Beijing looks like under his microscope, spread like a virus on China's major micro-blogging site Sina Weibo, since he posted them last Friday.Now the media is always interviewing him. Zhang's apartment is on the eighth floor, which he says is perfect for capturing the thickest levels of smog. As a Beijing native, Zhang explains his original purpose is to _ and expose its mystery." People have higher and higher standards for the environment," he says," When I was a child, I was annoyed by the frequent sandstorms, so I feel Beijing's air seems much better now all in all because there are hardly any sandstorms in recent years.Now, we've noticed PM2.5, which has long been neglected." Although he graduated as a science major from Beijing Normal University, Zhang says it is difficult for him to give an exact definition of what smog is in Beijing. Under his scope, which magnifies the sample 1,000 times, the smog is found to contain minerals, fragments of animal fur and insects, seeds and burnt dust.But many are compounds, he says, which are more difficult to identify. Zhang realizes that he may have disappointed the public because he can't show the inner construction of PM2.5 , today's most notorious(.) element in smog. It is beyond the capacity of his microscope and camera to explore such tiny grains, " You cannot imagine how splendid the micro world is" ! says Zhang Chao. Question: According to the text, which of the following is wrong? Options: A: PM2.5 has long been ignored. B: PM2.5 is an element in smog. C: Under the scope the smog can be identified clearly. D: In recent years there are less sandstorms in Beijing.
Answer: