申論題內容
1. Construction of Skywalk began March of 2004. The Glass Bridge is suspended 4,000
feet above the Colorado River on the very edge of the Grand Canyon, the bridge is able
to sustain winds in excess of 100 miles per hour from 8 different directions, as well as
an 8.0 magnitude earthquake within 50 miles.
阿摩線上測驗
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