as one of the most important products of iran, pistachio has a significant share in non-oil revenues. its annual foreign exchange earnings are over 800 million dollars. however, production of this nut in the country’s major production centers is faced with many problems regarding the efficiency and productivity of the inputs. this study was performed by using two-stage cluster sampling method. ...

the present study was planned to investigate the efficiency of explicit teaching and adequacy of the l2 learners' exposure to l2 input in academic contexts in iran. the case at hand was the acquisition of referential, quasi and expletive subject pronouns, as three different types of obligatory subjects in english. 96 iranian efl learners were selected from two universities in isfahan. they were...