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2. English as a Second Language Podcast - Wikipedia

   en.wikipedia.org/wiki/English_as_a_Second...

   English as a Second Language (ESL) Podcast is a web-based English language-learning podcast. It is the first and longest-running English language learning podcast on the Internet. It was launched in July 2005 by two former university professors, Dr. Jeff McQuillan and Dr. Lucy Tse of the Center for Educational Development in Los Angeles ...

3. Learning English (version of English) - Wikipedia

   en.wikipedia.org/wiki/Learning_English_(version...

   Learning English (previously known as Special English) is a controlled version of the English language first used on October 19, 1959, and still presented daily by the United States broadcasting service Voice of America (VOA). World news and other programs are read one-third slower than regular VOA English. Reporters avoid idioms and use a core ...

4. MP3 - Wikipedia

   en.wikipedia.org/wiki/MP3

   MP3 (or mp3) as a file format commonly designates files containing an elementary stream of MPEG-1 Audio or MPEG-2 Audio encoded data, without other complexities of the MP3 standard. Concerning audio compression (the aspect of the standard most apparent to end-users and for which it is best known), MP3 uses lossy data compression to encode data ...

5. 50Languages - Wikipedia

   en.wikipedia.org/wiki/50Languages

   50Languages, formerly Book2, is a set of webpages, downloadable audio files, mobile apps and books for learning any of 56 languages. Explanations are also available in the same 56 languages. It is free except for the optional books, and is cited in research on online language learning.

6. New Concept English - Wikipedia

   en.wikipedia.org/wiki/New_Concept_English

   New Concept English. Longman 's New Concept English by L. G. Alexander is a popular English language textbook teaching the British rules of English. The course was first published on October 30, 1967. [1] A revised edition, which was "specifically prepared for Chinese learners", [2] came out in 1997. The course consists of four components: A ...

7. Lung Sounds: Wheezing, Crackling, Stridor, and More - WebMD

   www.webmd.com/lung/lung-sounds

   The membranes that cover the walls of your chest cavity and the outer surface of your lungs are called pleura. If they get inflamed and rub together, they can make this rough, scratchy sound. It ...