In this task, you're given an article and an answer. Your task is to generate the fill-in-the-blank question for this answer based on the given article. The blanks are always at the end of the question, and can be filled with more than one word or phrase.

Q: Article: A new research has uncovered that culture is a determining factor when people interpret facial emotions .The study reveals that in cultures where emotional control is the standard,such as Japan,the focus is placed on the eyes to interpret emotions. Whereas in cultures where emotion is openly expressed,such as the United States,the focus is on the mouth to interpret emotions. "These findings go against the popular theory that the facial expressions of basic emotions can be universally recognized," said University of Alberta researcher Dr.Takahiko Masuda." A person's culture plays a very strong role in determining how he will read emotions and needs to be considered when interpreting the facial expressions." These cultural differences are even noticeable in computer emoticons ,which are used to convey a writer's emotions by email and text message. The Japanese emotions for happiness and sadness vary in terms of how the eyes are drawn ,while the American emotions vary with the direction of the mouth. In the United States the emoticons:)and:) show a happy face,whereas the emoticons:(and:(show a sad face. However,the Japanese tend to use the symbol ('') to indicate a happy face,and (;;) to indicate a sad face. "We think it is quite interesting and appropriate that culture tends to mask its emotions. The Japanese would focus on a person's eyes when detecting his or her emotions,as eyes tend to be quite subtle ,"said Masuda. "In the United States,where an open emotion is quite common,it makes sense to focus on the mouth,which is the most expressive feature on a person's face."
Answer: culture is a key to interpreting facial emotions

A: The text mainly tells us that _ .
****
Q: Article: If you give something to someone for free, will that person value it and use it? Development experts have debated this question for decades. Some think the act of paying causes people to value something and use it more. Selling necessary health treatments, others argue, may deny them to the people who need them the most. Consider, for example, chemically treated bed nets, which kill mosquitoes anti protect people against malaria while they are sleeping. William Easterly, an economist at New York University, believes this is one example of development having gone wrong. In a recent book, Professor Easterly suggests bed nets given free in Africa are often used for the wrong purpose. Yet, the World Health Organization (WHO) recommends bed nets be given out free and used by whole communities. The success of a large free bed net campaign in Kenya led the WHO to announce this recommendation This debate will likely influence social programs in the developing world. Many non-governmental organizations support the creation of self-supporting programs in poor countries. Goods and services are sold for a price to help these programs survive. According to Rachel Glenerster, who runs a research lab doing development and poverty studies at the Massachusetts Institute of Technology, her several studies have proven that small price changes have a big influence on the number of people who use a product. A price change will reduce the total amount of use of the product as well, she says. She has also found no evidence that the very act of paying for something changes how people use it. As for a particular product among special populations, some development experts argue that pricing is useful. When it comes to bed nets, Miss Glenerster says research shows no evidence of this. People are just as likely to use a bed net whether they paid for it or not.
Answer: a popular way to help the poor

A: The debate among experts focuses on _ .
****
Q: Article: Modern smart phones are fast becoming the must-have item. But what's in store for the next generation of smart phones? Tired of carrying around that heavy wallet? Soon you won't need to! The next generation of smart phones will have NFC technology, which lets you pay for things with your smart phones. All you do is enter your credit card information into your phone. Then, when you are in a shop that allows NFC payments, you just wave your phone over a special instrument at the checkout. The purchase is instantly charged to your credit card. Ever seen someone wearing something and wished you knew where to get it? Soon it will be easy with PicCommerce, new technology that uses image-recognition software. Here's how it works. If you see something you like, simply take a photo of it with your smart phone. Then, your phone will send the image to a special server, which will respond with information about where you can buy it and how much it will cost. Sick of your smart phone battery going flat? With so many applications draining the battery, the latest phones need to be charged every day. But next generation smart phones will come with built-in chips that can connect to an antenna in your home. And as long as your phone is within range of the antenna, you will be able to charge your smartphone wirelessly, even if it is in your pocket. Worried about getting your smart phones wet in the rain? A company called Hz0 has invented WaterBlock, new technology that makes your phone completely waterproof. And it's so effective that your phone will even work underwater. Fed up with carrying a heavy phone around? Soon, you will be able to get a PaperPhone! "Flexible phones are the future," said scientist Roel Vertegaal. So, what are the benefits of flexible phones? Well, it means that instead of carrying your phone in your pocket, you could wear it wrapped around your wrist, for example. Of course, there is just the problem: with so much new smart phone technology around, you will soon need to buy a new phone!
Answer: have a credit card

A:
To pay with your smart phone, you need to _ .
****