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: Parents are often amazed at how fast their child grows and develops. New research has determined that the ability to quantify may develop much sooner than most parents realize. Kristy vanMarle, professor of the University of Missouri, has determined that contrary to what previous studies have shown, infants are able to quantify substances --like sand or water--as early as 10 months. As long as the difference between the two substances is large enough, infants will choose the larger amount, especially when it comes to food. With the assistance of her team researchers, vanMarle tested the quantifying skills of babies by presenting them with two cups: one containing a small amount of food, and one containing a larger amount. Consistently, the babies chose the larger amount. "Several studies throughout the last 15 years have shown that infants are very good at telling how many objects they see; however, infants don't seem to count things like water or sand," vanMarle said. "What we're saying is that they can quantify substances; The infants can see how much food goes into each cup and compare that in their memories. They decide which amount is larger, and they almost always select the larger one." This information further refutes the long-held idea that babies "know nothing of the world," vanMarle said. "Since psychologists have begun studying infants with sensitive measures, we've discovered a lot of early abilities. I think for parents, it should be exciting to know that there's somebody there that has some fundamental and basic knowledge of the world, and that knowledge is guiding their development," vanMarle said. In the future, vanMarle says this kind of study could be linked to a child's progress in math-related skills, although programs marketed to increase those abilities, such as "Baby Einstein," still have mixed reviews when it comes to academic study.
Answer: through their natural abilities

A: Babies choose the larger amount of food _ .
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Q: Article: Why are we addicted to upgrades? According to Donald Norman, American author of the book The Design of Everyday Things, "planned obsolescence" is the trick behind the upgrading culture of today's consumer electronics industry. The New York Times cited Norman last month, saying that electronics manufactures strategically release new upgrades periodically, both for hardware and software, so that customers on every level feel the need to buy the newest version. "This is an old-time trick- they're not inventing anything new," he said. Thomas Wensma, a Dutch designer, despises the "planned obsolescence" of companies, as recently reported by UK-based The Guardian. Wensma said this is a wasteful system through which companies - many of them producing personal electronics - release shoddy products simply because "they know that, in six months or a year, they'll put out a new one". But the new psychology of consumers is part of this system, as Wensma said to the newspaper: "We now want something new, something pretty, the next shiny thing." _ "It's to the damage of the consumer and the environment," as the New York Times quoted Norman. "But perhaps to the betterment of the stockholder." In its most recent fiscal year, Apple's profit margin was more than 21 percent, reported the Los Angeles Times. At Hewlett-Packard, the world's biggest PC manufacturer, it was only 7 percent. "Steven Jobs pushed the principle of 'planned obsolescence' to new heights," the newspaper commented on the company's profits and marketing strategy. "Apple's annual upgrades of its products generate sales of millions of units as owners of one year's MacBook or iPhone line up to buy the newest version, even when the changes are incremental." Peer pressure As to Li Jijia, the need for upgrading his smart phone comes mainly from friends and classmates. When the majority of friends are switching to the latest devices, he worries about feeling left out. "Some apps and games require better hardware to run," said Li. "If you don't join in, you lose part of the connection to your friends."
Answer: they can make a lot of money

A: Donald Norman believes that electronics makers strategically release new upgrades periodically because _ .
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Q: Article: Recently, a study was carried out to determine who was the greatest American president.Sixty-five presidential historians took part in it, and they judged the past forty-two American leaders based on ten leadership qualities, including public persuasiveness , crisis leadership, management of the economy, moral leadership, and conduct of international relations.The historians also looked at administrative ability , relations with Congress, ability to set goals, and the pursuit of equal justice for all.Finally, the experts took into consideration the historical period in which the president lived. The historians chose Abraham Lincoln as American's greatest president.He had also been named best president in a similar study in 2000.Abraham Lincoln was the president who led the nation through the Civil War in the 1860s, and was able to unite it in the end.He also took the first steps to abolish slavery in America. Edna Medford, a professor of history at Howard University in Washington, D.C., was an adviser on this study and the earlier one.She says Abraham Lincoln is seen to represent the values the nation most honors, such as truthfulness, moderation, and respect for human rights. The historians put American's first president, George Washington, second on the list, while Franklin D.Roosevelt, Theodore Roosevelt, and Harry Truman follow in that order.John F.Kennedy, the country's first Roman Catholic president, is sixth on the list.Like Lincoln, Kennedy was murdered while in office. Among recent presidents, Ronald Reagan was named the tenth best and Bill Clinton rated fifteenth, while the historians put former president George W.Bush at number thirty-six.His father, George H.W.Bush, did much better, being placed at number eighteen.
Answer: this is the second time that Abraham Lincoln has been chosen as America's greatest president

A:
We learn from the text that _ .
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