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Miembro desde hace
3 years 11 monthsEdad: 15+
Level: FIRST CERTIFICATE B2
Idioma: English
(en)
ID: 459358
30/10/2020
Country code: AR
Country: Argentina
Tema principal: Science (2012277)
Watch the video about the three key phases of developing a new vaccine: exploratory research, clinical testing, and manufacturing. Answer the questions proposed by TED-ed
Otros contenidos: listening comprehension
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