The Scariest Places on Earth(小心，生人勿近！)

　　We all know one or two places that are said to be haunted1. They might be an old house that no one lives in or a dark cemetery2. It could even be a famous building or a classroom in your school. ... 詳全文

On Board Air Force One and On Board Marine One(《美國空軍一號》及《美國陸戰隊一號》)

　　Presidents must be able to meet with numerous people every day. This means going to different cities or countries all in one day. Sometimes, they may even have to come back the same night. The on... 詳全文