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.

[Q]: Article: Dad was always full of advice, but one of the biggest lessons he taught me one summer was about having a strong work ethic . When my brother and I were growing up, we mowed  yards during the summer to earn pocket change. Dad was our salesman. He told our neighbors about our service and offered a price they could not refuse. My brother and I got $ 10 per yard. I later found out that our friends were charging $ 20 or more for the same amount of work. Every time we headed out to mow lawns , Dad was there to watch. I used to wonder why he came with us. He stood supervising  our work in the heat when he could have been inside relaxing with air conditioning and an icy drink. One day we were cutting our next-door neighbor's yard, he always waited until the grass was knee-high to call us over. To make matters worse, we had an old lawn mower. This particular afternoon, I was finishing up and was tired and sweaty. I was just about to cut off the lawn mower when I saw Dad pointing to one piece of grass. He yelled, "You missed a piece." I frowned, hoping he would let it slide and let me go home. He kept pointing. So, tired and disappointed, I went back to cut that piece of grass. I said to myself, "That one piece isn't hurting anyone. Why won't he just let it go?" But when I reached adulthood, I understood his message ---When you're running a business, the work you do says a great deal about you. If you want to be seen as an entrepreneur  with honesty, you must deliver a quality product. That single blade of grass meant the job was not done. Other neighbors took notice of the good work we did and we soon got more business. We started out with one client, but by the end of the summer we had five. 
 Answer: They mowed it carefully.
[A]: Why did more and more people ask the brothers to mow their yards?


[Q]: Article: A messy desk can actually lead people towards clearer thinking, say researchers from Germany. The researchers found in a series of linked studies - using a messy desk and a messy shop front - that people actually thought more clearly when all around was chaos, as they sought to simplify the tasks at hand. Visual and mental clutter  forces human beings to focus and think more clearly. Famous thinkers and writers such as Albert Einstein and Roald Dahl have been notorious  for their untidy desks. "Messy desks may not be as detrimental  as they appear to be, as the problem-solving approaches they seem to cause can improve work efficiency or increase employees' creativity in problem solving," say the authors. "Business and government managers often promote 'clean desk' policies to avoid disorganized offices and messy desks, for the purpose of boosting work efficiency and productivity," writes lead researcher Jia Liu of the University of Groningen in a paper published in the Journal of Consumer Research. "This practice is based on the conventional wisdom that a disorganized and messy environment can clutter one's mind and complicate one's judgments." "However, not all evidence supports this conventional link between a messy environment and a messy mind." The scientists tested people's response in various 'messy' environments - including a messy shop front, a disorganized desk, and even a work environment where a language task 'reminded' people of messiness. The authors found in the series of six studies people tended towards simplicity in their thinking. "They categorized   products in a simpler manner, were willing to pay more for a T-shirt that shows a simple-looking picture, and sought less variety in their choices." said the researchers. 
 Answer: to support the idea that clearer thinking comes from messy environment.
[A]: Why does the author take Albert Einstein as an example?


[Q]: Article: Since the Internet came into homes, the daily life has never been the same again. But the thing that worries most of us is that we can get viruses from the Internet. But can we catch viruses on our cell phones? A new study in the journal Science says yes, but the spread of such mobile software that can bring harm to our cell phones won't reach dangerous levels until more cell phones are on the same operating system. Computers are easily attacked by viruses because they share data, especially over the Internet. Of course, nowadays, more people are using their cell phones more and more frequently. They use them for emailing, text messaging and downloading troublesome ring tones, etc.,so it is obvious that cell phone viruses are a threat as well. Scientists used nameless call data from more than six million cell phone users to help model a possible outbreak. And they concluded that viruses that spread from phone to phone by Bluetooth are not much concerned, because users have to be in close physical relation for their phones to "see" one another. However, viruses that spread through multimedia messaging services can move much faster, because they can come in disguise , such as a cool tune sent by a friend. The good news is that to be effective, these viruses need their victims  to all use the same operating system, which not enough of us do. Because there is no Microsoft operating system for mobile phones, yet. Thank goodness. 
 Answer: The threat of cell phone viruses.
[A]:
What is the passage mainly about?


