I'm taking a test and have to guess the right answer to the question after the article. Article: A black hole is created when a large star burns out. Like our sun, stars are unbelievably hot furnaces that burn their own matter as fuel. When most of the fuel is used up, the star begins to die. The death of a star is not a quiet event. First there is a huge explosion. As its outer layer is blasted off into space, the dying star shines as brightly as a billion suns. After the explosion gravity pulls in what's left of the star. As the outside of the star sinks toward the center, the star gets smaller and smaller. The material the star is made of becomes tightly packed together. A star is so dense that a teaspoon of matter from it weighs billion of pounds. The more the star shrinks, the stronger the gravity inside it becomes. Soon the star is very tiny, and the gravity pulling it in is unbelievably strong. In fact, the gravity is so strong that it even pulls light into the star! Since all the light is pulled in, none can go out. The star becomes black when there is no light. Then a black hole is born! That's what we know about black holes. What we don't know is this: What happens inside a black hole after the star has been squeezed into a tiny ball? Does it keep getting smaller and smaller forever? Such a possibility is hard to imagine. But if the black hole doesn't keep shrinking, what happens to it? Some scientists think black holes are like doorways to another world. They say that as the star disappears from our universe, it goes into another universe. In other words a black hole in our universe could turn into a "white hole" in a different universe. As the black hole swallows light, the white hole shines brightly--somewhere else. But where? A different place, perhaps, or a different time -- many years in the past or future. Could you travel through a black hole? Right now, no. Nothing we know of could go into a black hole without being crushed. So far the time being, black hole must remain a mystery. Black holes are a mystery--but that hasn't stopped scientists from dreaming about them. One scientist... Question: When the star begins to die _ . Options: A: there is no fuel left in it B: its outer layer goes into space first C: a huge explosion will happen D: it doesn't give off light any longer
C
I'm taking a test and have to guess the right answer to the question after the article. Article: When you don't have anything planned for the day or it's rainy outside and your children are stuck in the house, why not sit around and tell them riddles? Telling riddles will make your family laugh and sometimes even scratch their heads, trying to figure out what the answer is. Riddles have been a pastime for centuries. Not only have riddles been something for passing the time, but they have also been used to pass on secret information during the Second World War. Even the ancient Greeks used riddles. They would tell riddles at parties and whoever was the first to get them right would receive prize. Most riddles use words that have double meanings or share the same sound like "hear" and "here". So in order to get the riddle, you will have to do some creative thinking and think of all the possibilities of different words. The difficulty of figuring out the riddle is based on the riddle itself. The riddle has to provide you with enough clues to come to the right answer, but that doesn't mean that the clues have to be easy. If you are looking to tell riddles but don't know any, you can look online and you will find a large number of sites that will have hundreds of different riddles to choose from. If you would like to look somewhere else then you could look at your local bookstore, where you will be able to find many different books with thousands of riddles to choose from. You can even find websites and books that will tell you how to write your own riddles. After you have found some resources that have different riddles, you will need to read through them to find the right ones for you and your family: You will also need to make sure that your kids will have a chance to figure out the answers. So take your time and choose the right family riddles to tell. Question: What is the author's main purpose in writing the text? Options: A: To recommend an interesting family activity. B: To stress the importance of family activities. C: To encourage children to read more books. D: To introduce the history of riddles.
A
Q: I'm taking a test and have to guess the right answer to the question after the article. Article: QINGDAO--Water and power supplies have been _ in the East Chinese city of Qingdao, the site of an oil pipeline explosion on Friday, the local government said on Monday. Crude oil began leaking from the pipeline at 3:00 an Friday in Qingdao in Shandong province. The valves of the Huangdao oil warehouse were shut about 15 minutes later. The oil spill then flowed into the city's rainwater pipe network, which empties into Jiaozhou Bay. Explosions occurred at two locations around 10:30 am Friday when workers were clearing the spill. According to the local government, about 85 percent of public heating and 90 percent of the gas supply were also brought back to normal as of Monday. Residents who have been taken to the temporary settlements are receiving bottled water and bread. Many schools and kindergartens have reopened classes after Friday's oil pipeline explosion. No injures and deaths of students or teachers have been reported following the explosions at an underground pipeline operated by Sinopec. The school buildings of one middle school in the district were seriously damaged during the explosions. Education authorities have arranged psychological help for students and teaching staff. All other 18 schools and kindergartens in the district reopened classes on Monday. As of Monday noon, the death toll from the explosion had risen to 55, with 9 people still missing and 136 hospitalized. According to local police, 49 bodied have been identified so far, and 42 of them were male victims. As of Monday morning, the blood supply in Qingdao was enough for the injured after more than 950 people in the city donated more than 340,000 ml of blood in the wake of the incident. Question: We can learn from the passage that _ . Options: A: everything was brought back to normal right after the explosion B: no measures were taken to help the suffering people out of trouble C: no more dead body was found after Monday noon D: all the 19 schools in the district were affected by the explosion
A: D