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: The Apple iPhone's impact was widely evident at the Consumer Electronics Show, as new touch-screen devices could be found everywhere. The consumer electronics industry came unbuttoned in Las Vegas this week. At the annual Consumer Electronics Show, companies from around the world many devices boasting (...) touch - sensitive technology, rather than traditional push-button controls. Motorola, Sony, and LG Electronics all showed off touch-screen phones this week. Microsoft Chairman Bill Gates praised and offered a touch-screen computer, the Surface, related to a flat panel TV for a tabletop. Even camera makers, such as Kodak,included touch-screen LCDs in their devices. Touch-screen tech has been in use for years,but the push to develop and weave it into consumer electronics gathered steam with the June introduction of Apple's iPhone. "The touch-screen industry is really getting hot," says Jennifer Colegrove, a senior analyst at iSuppli. "Since the iPhone came out, there are a lot of companies that did not have a relationship with touch screens before that decided, 'OK, I want to make a touch screen, too.'" The touch-screen tech ecosystem now includes more than 100 companies specializing in everything from smudge-proof screens to sensors able to detect fingers before they even contact the screen. Sales of leading touch-screen technologies,such as those used in mobile phones and navigation devices,are expected to rise to $ 4.4 billion in 2012, up from $ 2.4 billion in 2006,according to iSuppli estimates.
Answer: The Apple iPhone was popular.
What did the writer think about the Apple iPhone?

Article: It'll soon be the birthday of one of my closest friends, Susie. I still cannot decide what to give her. She's a rare friend because she has been there for me all the time whenever I need a friend to talk to. I can always depend on her to be the first to arrive to give me advice when I have problems. I guess I am so lucky to have her as a friend. It's more than seven years since I first met Susie in our school. I joined the theater group and she was a director then. At first I thought she was _ but in the end I realized that she needed to keep a strict image in order for her actors and actresses to take her seriously. And then during practice I got a chance to know her better. In fact, she was a friendly and warm-hearted person. Soon we become good friends. I don't know exactly what to give my friend on her birthday as I believe she has everything. So it's really hard to buy her a gift she will appreciate. This year I want something different and special but I don't know what to give. One day I searched the internet without any purpose and to my surprise there is a really lovely site where you can buy all kinds of gifts. I scanned some of their items and I found cool and exciting gifts. I chose a special personalized bracelet . I'm sure that this will look perfect on her. I put our names as part of the design of the bracelet so that it'll remind us that we'll forever be friends. I can't wait to give her my gift but I won't tell her yet. I don't want to destroy the surprise.
Answer: She can always offer help when the author is in need.
Why does the author consider Susie as a rare friend?

Article: Deception is something that people do all the time ,and it plays an important role in military strategy. Now some researchers are trying to figure out how to get robots to do it, by looking at the behavior of squirrels and birds. At Georgia Tech, a team led by Ronald Arkin , a professor at the School of interactive Computing, studied the literature on squirrels hiding their acorns .Squirrels will hide their food m a certain place, but when they see other squirrels trying to steal from them, they attempt to fool the thieves by running to a fake location. Ronald Arkin and his Ph. D. student Jaeeun Shim used that as a model for robot behavior. They programmed the robot into tricking a "predator " machine by doing what ei squirrel does: showing the enemy a false location for an important resource. The team also looked at how other animals in this case,a species of bird called Arabian babbler~ drive off predators. A babbler will make an alarm call when they see a predator and other babblers will join the bird and make more calls. They then surround the predator, all the while flapping wings and making noises. The babblers don't ever actually fight the animal they want to drive off; they just make enough noises and flaps around enough so that it seems that attacking a babbler isn't worth it They found that the deception works when the group reaches a certain size--essentially, when enough birds arrive to convince the enemy that it's best to back off . Davis modeled that behavior in software using a military scene and found that it worked even if the group didn't have the firepower to confront the enemy directly. The military is interested in this because a robot that can fool an opponent is a valuable tool. It could lead an enemy down a fake trail or make itself look more dangerous than it actually is.
Answer: It can scare the enemy away who wants to destroy the acorns.
Why does the military want to take advantage of squirrels'trick?