"Pollution is one of the big problems in the world today. Towns a____ cities a__...

Questão de Inglês da banca EsFCEx aplicada no concurso EsFCEx (2009). Confira a resolução completa abaixo:

"Pollution is one of the big problems in the world today. Towns a____ cities a_____ growing, indu_____ is gro_____ and t______ population o______ the wo______ isgro_________."
The passage above is an example of what type of test?