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: Making friends is a skill like most skills. It improves with practice. If you want to meet people and make friends, you must be willing to take some action. You must first go where there are people. You won't make friends staying home alone. Joining a club or a group, talking with those who like the same things as you do is much easier. Or join someone in some activity. Many people are nervous when talking to new people. After all meeting strangers means facing the unknown. And it's human nature to feel a bit uncomfortable about unknown. Most of our fears about dealing with new people comes from doubts about ourselves. We imagine other people are judging us, finding us too tall or too short, too this or too that. But don't forget that they must be feeling the same way. Try to accept yourself as you are, and try to put the other person at ease. You'll both feel more comfortable. Try to act self-confident even if you don't feel that way. When you enter a room full of strangers, such as a new classroom, walk tall and straight, look directly at other people and smile. If you see someone you'd like to speak to, say something. Don't wait for the other person to start a conversation. Just meeting someone new does not mean that you will make friends with that person--friendship is based on mutual liking and "give and take". It takes time and effort to develop.
Answer: Making friends
The best topic of the passage may be _ .

Article: Music comes in many forms;most countries have a style of their own. Poland has its folks. Hungary has its czardas. Argentina is famous for the tango. The U.S.A.is known for jazz,the type of music that has gained worldwide popularity. Jazz is an American contribution to popular music. While classical music follows formal European tradition,jazz is rather a free form. It is full of energy,expressing the moods,interests,and emotions of the people. It is breaking and exciting with a modern sound. In the 1920s jazz sounded like America. And so it does today. The origins of the music are as interesting as the music itself. Jazz was invented by American Negroes,or blacks,as they are called today,who were brought to the southern states as slaves. They were sold to farm owners and forced to work long hours in the cotton and tobacco fields. This work was hard and life was short. When a Negro died his friends and s would gather and carry the body to have a ceremony before they buried him. There was always a band with them. On the way to the ceremony the band played slowly,solemn music suitable for the situation. But on the way home the mood changed. Spirits lifted. Everyone was happy. Death had removed one of their members,but the living were glad to be alive. The band played happy music. This music made everyone want to dance. It was an early form of jazz. Music has always been important in Negro life. The black,who were brought to American from West Africa,had a rich musical tradition. In the fields,they made up work songs. Singing made the hard work go faster. And when they got to Christianity,they made lovely spirituals,which have become an everlasting part of American music.
Answer: was started by blacks in America
From the passage,we can see that jazz _ .

Article: What happens inside the skull of a soccer player who repeatedly heads a soccer ball? That question motivate a challenging new study of the brains of experienced players that has caused discussion and debate among soccer players, and some anxiety among those of us with soccer-playing children. For the study, researchers at the Albert Einstein College of Medicine in New York selected 34 adults,men and women. All of the volunteers had played soccer since childhood and now competed year-round in adult soccer leagues. Each filled out a detailed questionnaire developed especially for this study to determine how many times they had headed a soccer ball in the previous year, as well as whether they had experienced any known concussions in the past. Then the players completed computerized tests of their memory and other learning skills and had their brains scanned, using a complicated new MRI technique which can find structural changes in the brain that can't be seen during most scans. According to the data they presented at a Radiological Society of North America meeting last month,the researchers found that the players who had headed the ball more than about 1,100 times in the previous 12 months showed significant loss of white matter in parts of their brains involved with memory,attention and the processing of visual information, compared with players who had headed the ball fewer times. This pattern of white matter loss is "similar to those seen in traumatic brain injury" , like that after a serious concussion, the researchers reported,even though only one of these players was reported to have ever experienced a conc ussion. The players who had headed the ball about 1,100 times or more in the past year were also generally worse at recalling lists of words read to them, forgetting or _ the words far more often than players who had headed the ball less.
Answer: research report
The passage is most probably a _ .