Listening - Academic Research

develop a plan or set of rules

- - - - - - - te

bring best profits or lowest costs

c - - - - e - - - - - - - -

study or examine something in detail

methods and principles used to study something

different beliefs or opinions

c - - - - - - - - - - - y

p - - - - - -

doubting that something is true or useful

sc - - - - - - -