In this task, you're given an article and an answer. Your task is to generate the question for the answer based on the given article.

Article: For a long time, the traditional method of identifying liars was to watch their body language, including facial expressions. What if the person appears to be nervous? Is the person unable to look me in the eye? Is he or she look around the room? What about other nervous movements, such as fidgeting or shifting from side to side? Many people--from parents to police officers and airport security personnel--depend on this method. But does a person's body and face reveal the truth? Not according to a new study. Talking, it seems, is the best way to smoke out a liar. That is what researchers in the United Kingdom found out recently. Their investigation took place at one place where lying can get you into big trouble--an airport. The researchers asked volunteers to pretend they were real passengers and then lie to airport security agents. Some of the agents used spoke conversation-based methods to question these make-believe passengers. Others depended instead on the person's body language, like lack of eye contact and showing signs of nervousness. The agents talking with the passengers were 20 times more likely to catch the liars. The study found that these conversation-based techniques can help you recognize when a person is lying to you. Like many methods, this conversation method has a name. It is called Controlled Cognitive Engagement or CCE, for short. The British government partly financed this study. The American Psychological (APA) published the findings. Body language cannot be trusted. Using body language and facial expressions to catch someone in a lie is really hard. And it only works, seemingly, by chance. Thomas Ormerod is the head of the School of Psychology at the University of Sussex in England. On the APA website, he reported that the "suspicious-signs method"--or using body language--"almost completely fails" in finding lies.
Answer: Communicate with researchers by talking.
What should volunteers in the investigation do?

Article: By taking a few simple techniques, parents who read to their children can greatly develop their children's language skills.It is surprising but true.How parents talk to their children makes a big difference in the children''s language development.If a parent encourages the child to actively respond to what the parent is reading.the child's language skills increase. A study was done with 30 three-year-old children and their parents.Half of the children took part in the experimental study;the other half acted as the control group.In the experimental group,the parents were given a two-hour training and they were taught to ask open-ended questions rather than yes-or-no questions.For example,the parent should ask,"What is the doggie doing?" rather than "Is the doggie running away?" The patents in the experimental group were also instructed in how to help children find answers,how to suggest different possibilities and how to praise correct answers. At the beginning of the study,the children did not differ in measures of language development,but at the end of one month,the children in the experimental group showed 5.5 months ahead of the control group on a test of expression and vocabulary.Nine months later,the children in the experimental group still showed an advance of 6 months over the children in the control group.
Answer: The power of speech can easily he developed using proper methods
Which of the following can be inferred from the passage?

Article: Although Thomas Edison created the technologies behind three major 21st century industries electrical power,recorded music and movies--his greatest invention may have been the modern method of inventing.He basically came up with the modern system of research and development.Edison was not the only scientist doing research in his garage but someone who gathered around him a team of creative scientific minds.Edison's 1aboratories were the forerunners of Apple,Google and Microsoft. Yet for a11 his scientific gifts,he was no Steve Jobs or Bill Gates.He once said,"Anything that won' t sell,I don' t want to invent." But Edison,unlike Jobs or Gates,had no real sense of what the public wanted or how to change his discoveries into products that might sell.It took him years to understand that the phonograph was not a business tool but an entertainment invention.He helped create movies but resisted the idea that people might want to go into a theater to watch one. We chose Edison this year because we need his example now more than ever.Though we live in a time of great reformation,the U.S.is in danger of losing its advantage in science and technology.American investment in research and development has not increased as a percentage of GDP since the mid1980s,while the government' s share has been dropping.And this is at a time when China is rapidly increasing its money on research and development.The U.S.was once among the 1eading nations.Now it ranks near the bottom of the 23 nations that collect such data.We hope that Edison' s story might not only encourage reformation but also inspire more young Americans to study science and engineering.
Answer: Edison wanted to invent things that sold well.
Which of the following is TRUE according to the passage?