[简答题]The inner support system was designed by Gustave Eiffel, the same man who made the famous Eiffel Tower in Paris.

During its formative years, the inner solar system was a rough-and-tumble place. There were a couple of hundred large objects flying around. Moon-size or bigger, and for millions of years they collided with one another. Out of these impacts grew the terrestrial planets—Mercury, Venus, Earth with its Moon, and Mars—and the asteroids.
Scientists have thought of these collisions as mergers: a smaller object (the impactor) hits a larger one (the target) and sticks to it. But new computer modeling by Erik Asphaug and Craig B. Agnor of the University of California, Santa Cruz, shows that things weren’t that simple. "Most of the time, the impactor and the target go off on their merry ways," Dr. Asphaug said. About half the collisions are these hit-and-nm affairs. Now the two researchers and a colleague, Quentin Williams. have done simulations to study the effects of these collisions on the impactors. They are not pretty.
"The impactors su
A. collisions of objects in inner solar system
B. the merging of a smaller object and a larger one
C. the impactor sticking to the target
D. chemical changes

INNER MONGOLIAN TOURIST INFORMATION CENTER
Inner Mongolia, with its unique natural beauty, culture and traditions, is in a position to attract a great number of visitors worldwide. With 59th anniversary of Inner Mongolian Statehood in 2006 and Beijing Olympics in 2008 set to attract more international visitors to this region than ever before, further developing Inner Mongolia’s tourism sector is crucial to advance this potentially high earning sector of business. Therefore, the Tourist Information Center was set up.
The Tourist Information Center is taking the necessary steps to build a modern visitor information system that can help travelers to Mongolia, or even people thinking about coming to Inner Mongolia, find their way. At the TIC itself, visitors will find an increasing array of up-to-date information and materials to make their stay in Inner Mongolia a rewarding one, and people from around the world will be able to access information and mak