Hi there!
Here you are listening exercise number 7. You may also find a pdf with the answer key. I think it might be useful for some students.
answer key listening exercise number 7
Have a nice day!
Alonso Redondo Ramiro
Departamento de Lingüística Aplicada a la Ciencia y a la Tecnología
ETSI Agrónomos – UPM, Avda. Puerta de Hierro, 2. (28040 – Madrid)
91-3365847
alonso.redondo@upm.es