题目

根据短文内容回答下列问题     Pictures are falling off the wall. Lights are waving. Bed is shaking. Everything is moving. What's going on? It's an earthquake.     Earthquakes are horrible disasters (灾难) and some of them are destructive (毁灭性的). The top layer of the earth is made up of huge pieces of rock. They move past each other all the time along fault lines (裂纹线). But sometimes two pieces get stuck together. When they finally move away from each other, they move suddenly. And this makes the land above them shake. This is the most common cause of earthquakes.     During a small earthquake, you will feel a little shaking. But during a strong one, you will be thrown about. A strong earthquake is very horrible. Cracks will appear on the ground and windows and doors will break. Buildings will even fall down. So watch out! If an earthquake happens at sea, it can make big waves called "tsunamis" (海啸). When these waves reach land, they can destroy villages.     Earthquakes are measured (测量) on a scale (等级) of 0-9. It is called the Richter scale. A size 9 earthquake is the strongest and most dangerous. Since 1900, more than two million people have died in earthquakes. In 1976, a size 7.8 earthquake hit Tangshan, China. It killed more than 240,000 people!     Many earthquakes happened in China, so it is important for us to know what to do when an earthquake hits. Here are some tips on how to stay safe in an earthquake.     Indoors     Hide under a desk or bed. Stay away from windows and anything that could fall on you.     Do not get into a lift during an earthquake! When an earthquake has ended, stay under the desk until it is really safe to get up.     Open a window and get out of the building quickly if the gas line in your house is broke.     Outdoors     Move away from buildings and street lights.     Do not run outside if you are in a shop and far from the door.     Make sure you wear shoes after an earthquake. There may be broken glass on the ground. （1） What will happen when an earthquake happens at sea? （2） How are earthquakes measured? （3） Where should we hide when an earthquake happens if we are at home? （4） We don't need to wear shoes after an earthquake, do we? （5） Why should we move away from buildings and street lights when an earthquake happens? （6） According to the passage, what is the common cause of an earthquake? 答案： It can make big waves called "tsunamis" (海啸). Earthquakes are measured on a scale (等级) of 0-9. Hide under a desk or bed. Yes, we do. They are dangerous. The huge pieces of rock move suddenly.

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