Astronaut youngest person to fly in space is Gherman Titov, who was 25 years old when he flew Vostok 2. (Titov was also the first person to suffer space sickness). The oldest person who has flown in space is John Glenn, who was 77 when he flew on STS-95. 438 days is the longest time spent in space, by Russian Valeri Polyakov. As of 2006, the most spaceflights by an individual astronaut is seven, a record held by both Jerry L. Ross and Franklin Chang-Diaz. The farthest distance from Earth an astronaut has traveled was , when Jim Lovell, Jack Swigert,
Test of Chinese as a Foreign Language for admission or as the evaluation of applicant’s Chinese proficiency. In addition, many international businesses in Taiwan, such as LG, adopt TOCFL as reference for their employee dispatch programs. Several overseas companies also refer to candidates’ TOCFL certificates when recruiting. TOCFL is a foreign language proficiency test for non-native speakers of Mandarin Chinese. Those who wish to know their level of Chinese proficiency, and those who want to study, work, or do business in Chinese-speaking countries or contexts are welcome to register for the test. The following table sets out the suggested learning hours of Mandarin Chinese, and suggested vocabulary