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.
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Question: Article: Each Indian was supposed to keep his birth name until he was old enough to earn one for himself.But his playmates would always give him a name of their own.No matter what his parents called him, his childhood friends would use the name they had chosen.Often it was not pleasing, such as Bow Legs or Bad Boy.But sometimes a name fit so well that the youngster found it difficult to shake it off.If he could not earn a better one from a war later, he could be stuck with a name like Bow Legs for the rest of his life. The Indian earned his real name when he was old enough for his first fight against the enemy.His life name depended on how he acted during this first battle.When he returned from the war, the whole tribe would gather and observe the ceremony in which he would be given his name by the chief.If he had done well, he would get a good name.Otherwise he might be called Crazy Wolf or Man-Afraid-Of-a-Horse.So an Indian's name told his record or described the kind of man he was. A man was given many chances to improve his name, however.If in a later battle he was brave in fighting against the enemy, he was given a better name.Some of our great fighters had as many as twelve names--all good and each better than the last. An Indian's names belonged to him for the rest of his life.No one else could use them.Even he himself could not give them away because names were assigned by the tribe, not the family.So no man could pass on his name unless the chief and the tribe asked him to do so. Sometimes an Indian would be asked to give his name to a son who had performed a noticeable deed.I know of only three of four times when this happened.It is the rarest honor for a person--the honor of assuming his father's name.
Answer: his childhood friends

Answer: An Indian could be given the second name by _ .

Question: Article: Sleep is like food for the brain. Enough sleep helps the body and the brain grow and develop. However,many Chinese do not sleep well,and many do not pay enough attention to sleep. The Chinese Medical Doctor Association released the 2013 China Sleep Quality Index on March 19 to mark World Sleep Day---March 21. According to the index,nearly a quarter of Chinese people don't sleep well.Half said that they feel tired after getting up and 15 percent people have trouble falling asleep. Ye Jingying,a sleep expert at Beijing Tongren hospital,says:"If people often wake up during the night,or always feel weak and tired in the day,they should pay attention to their sleep pattern." Many people play with their cell phones or i pads before sleeping.The report said that this is one of the main reasons for bad sleep.Other reasons include stress and bad moods. How to sleep well? Above all,get enough sleep.Seven to nine hours of sleep every night is perfect for an adult,and eight to nine hours is best for a teenager. Forming good sleep habits is important.The report suggested that people need to keep away from digital devices for at least an hour before sleep. The lights keep their brains excited for a long while.Other suggestions include:try to go to sleep and wake up at the same time every day,even on weekends and during holidays,and do the same relaxing things before bed each night,like listening to soft music.
Answer: March 21

Answer: According to the passage,World Sleep Day falls on _ .

Question: Article: You stare at waterfall for a minute or two, and then shift your gaze to its surroundings. What you now see appears to drift upward. These optical illusions occur because the brain is constantly matching its model of reality to signals from the body's sensors and interpreting what must be happening--that your brain must have moved, not the other; that downward motions is now normal, so a change from it must now be perceived as upward motion. The sensors that make this magic are of two kinds. Each eye contains about 120 million rods , which provide somewhat blurry black and white vision. These are the windows of night vision; once adapted to the dark, they can detect a candle burning ten miles away. Color vision in each eye comes from six to seven million structures called cones . Under ideal conditions, every cone can "see" the entire rainbow spectrum of visible color1s, but one type of cone is most sensitive to red, another to green, a third to blue. Rods and cones send their messages pulsing an average 20 to 25 times per second along the optic nerve. We see an image for a fraction of a second longer than it actually appears. In movies, reels of still photographs are projected onto screens at 24 frames per second, tricking our eyes into seeing a continuous moving picture. Like apparent motion, color1 vision is also subject to unusual effects. When day gives way to night, twilight brings what the poet T.S. Eliot called "the violet hour." A light levels fall, the rods become progressively less responsive. Rods are most sensitive to the shorter wavelengths of blue and green, and they impart a strange vividness to the garden's blue flowers. However, look at a white shirt during the reddish light of sunset, and you'll still see it in its "true" color1--white, not red. Our eyes are constantly comparing an object against its surroundings. They therefore observe the effect of a shift in the color1 of illuminating on both, and adjust accordingly. The eyes can distinguish several million graduations of light and shade of color1. Each waking second they flash tens of millions of pieces of information to the brain, which weaves them incessantly into a picture of the world around us. Yet all this is done at the back of each eye by a fabric of sensors, called the retina , about as wide and as thick as a postage stamp. As the Renaissance inventor and artist Leonardo da Vinci wrote in wonder, "Who would believe that so small a space could contain the images of all the universe?"
Answer: signaled by about 120 million rods in the eye.

Answer:
Visual illusions often take place when the image of reality is _ .