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.

Article: Today only one person in five in the United States lives within 50 miles of his birthplace. Since the country was first settled, Americans have moved around a great deal, and are often far away from their parents. Because they have broken ties with their past at a young age, chosen their own occupations, established their own homes and developed their own lifestyles, few American children grow up closely surrounded by grandparents, aunts, uncles and cousins as they do in Italy, Nigeria, or India, for example. This along with the fact that modern American families do not have servants has made the "baby-sitter" a vital part of the American scene. A "sitter" is someone who is hired to care for children for a specific length of time--usually relatively short--while the parents are out for an evening, going to a party or a course of study for example. Sometimes the baby-sitter is also hired for longer period, perhaps when the parents are away for a weekend. In such cases the "sitter" is likely to be a mature and motherly woman. For short periods, teen-agers, college students, nursing students, and others are commonly employed on an hourly basis. From the point of view of convenience, the best sitters are often young people who live in your apartment building or close by in the neighborhood. This gives you a chance to meet the parents and see what they are like. If an emergency occurs, young sitters can call upon their parents quickly for help; you do not have to take them far to see them home at night or pay expensive taxi fares. Another advantage is that young people living close by can usually fill in quite readily on short notice or for short periods of time. In an apartment house you can ask the superintendent for permission to post a notice for a baby-sitter by the mailboxes. This is often the best way to find out if there is anyone in the building who is interested in baby-sitting. Retired people as well as students are often glad to earn a little money in this way and can be found by such a note.
Answer: takes care of babies and cooks for the family
A baby-sitter is a person who _ .

Article: "Hi Dave,how are you today?Just thought I'd let you know what I'm doing,"they would read.Or "Sorry you're going.I've had a good time and that would probably have had something to do with you,so thanks." In some ways,the relaxed attitude was shocking,says Melville.But it was a sign of how students' understanding of their role has changed. "They have a more independent view of the university,and they feel free to comment,"said Melville. A committee,led by Melville,was set up earlier this year to explore the change in students' attitudes towards teachers. "This is something being driven by young people,"said Melville. "They live surrounded by different kinds of electronic resources.They use social networking tools and things like Wikipedia.The first group of these students is now at university." Students don't regard teaching staff in the same way as previous students did. "Because Web2.0, Google,Wikipedia are all about being able to change things yourself,students expect to be able to do this as well,"said Melville. There have been other changes in the student--teacher relationship.If students choose to study through a social networking group,they are in control.They don't always make staff welcome,and they are free to decide which staff members they allow in. "Almost everybody who gets into using these kinds of technologies,it appears,becomes much shallower in their research,"said Melville.
Answer: teachers are no longer regarded as knowledgeable and necessary
We can find the following changes in the student-teacher relationship EXCEPT _ .

Article: Do lobsters, crabs and other crustaceans feel pain? We certainly act as if they don't.Most chefs cook lobsters and crabs alive, usually by dumping them in boiling water.Along with melted butter.That's the appeal of crustaceans-there's no fresher food.We may feel a bit of guilt, or maybe just discomfort, when we hear the creatures rattling around the inside of the pot as the water boils.But that feeling usually _ for lobster lovers by the time we crack open a claw and dig out the delicious meat.We wouldn't dream of doing the same thing to a live chicken or pig which are dead well before die cooking process begins, but those crustaceans are different.They don't even feel pain.Right? Actually, they just might.That's the conclusion of a new study published in the Journal of Experimental Biology.Robert Elwood and Barry Magee of Queen's University in Belfast examined the reaction of common shore crabs to small electrical shocks. Ninety crabs were placed in a brightly lit area and were given the choice of moving to one of two dark shelters.(Shore crabs like to hide in dark, tight spaces.) Once they'd made their choice, the crabs in one of the shelters were exposed to an electric shock.After a rest period, the crabs were returned to the lit tank.Most of the crabs went back into the dark shelters, and then the same crabs were given another electric shock.When they were placed back into the lit tank for the third time, the majority of the shocked crabs instead went to the other dark shelter, avoiding the one where they had repeatedly been shocked. As Elwood put it, the crabs' choice indicated they wanted to escape the shocks: Having experienced two rounds of shocks, the crabs learned to avoid the shelter where they received the shock. They were willing to give up their hideaway in order to avoid the source of their probable pain.
Answer: the crab is a popular and healthy seafood
According to the author, people cook the crab alive due to the belief that _ .