Astronaut Force Base. Astronauts is training must learn how to control and fly the Space Shuttle and, it is vital that they are familiar with the International Space Station so they know what they must do when they get there. Mission Specialist Educators, or "Educator Astronauts", were first selected in 2004, and as of 2007, there are three NASA Educator astronauts: Joseph M. Acaba, Richard R. Arnold, and Dorothy Metcalf-Lindenburger. Barbara Morgan, selected as back-up teacher to Christa McAuliffe in 1985, is considered to be the first Educator astronaut by the media, but she trained as a mission specialist. The Educator
Chinese as a foreign language characters already listed above. In his 1991 article "Why Chinese is So Damn Hard", David Moser states that an English speaker would find the "ridiculous" writing system "unreasonably hard to learn" to the level of achieving literacy due to the large number of characters. Moser argued that he was unable to "comfortably read" a newspaper even though he knew 2,000 characters. The 17th-century Protestant theologian Elias Grebniz, said that Chinese characters were: In Gautier's novella "Fortunio", a Chinese professor from the Collège de France, when asked by the protagonist to translate a love letter suspected to be written in Chinese,