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Topic sentence
（主题句） |
The Smithsonian Institution is worth visiting for a number of reasons. |
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Supporting idea 1
（支持理由1） |
The Smithsonian Institution comprises various museums that offer something for everyone. |
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Details – facts
（细节展开-提供事实） |
These museums include the National Museum of History and Technology, the National Aeronautics andSpaceMuseum, the National Collection of Fine Arts, the National Museum of Natural History, and several others. |
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Supporting idea 2
（支持理由2） |
A person can do more than just look at the exhibits. |
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Details – examples
（细节展开-举例） |
For example, in the insect zoo at the National Museum of Natural History, anyone who so desires can handle some of the exhibits. |
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Supporting idea 3
（支持理由3） |
The museums provide unforgettable experiences. |
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Details – personal
experience （细节展开-个人经历） |
In climbing through the Skylab exhibit at the National Aeronautics andSpaceMuseum, I was able to imagine what it would be like to be an astronaut in space. |
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Supporting idea 4
（支持理由4） |
Movies shown at regular intervals aid in building an appreciation of our world. |
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Details – description
（细节展开-描述） |
In the National Aeronautics andSpaceMuseum, there is a theater that has a large screen. When the movie is shown, it gives the viewer the feeling that he or she is in the movie itself, either floating above the Earth in a hot-air balloon or hang gliding over cliffs. |
