The phrase "impinge on" in Paragraph 1 most probably means______

A．American society has failed to provide these institutions with adequate resources to meet their needs
B．Though in difficulty, these institutions are determined to fulfil both research and teachingfunctions
C．American society has relied too much on their institutions of higher education to allow them for easy adjustment to all their functions
D．More resources and efforts of faculty are needed for research work than teaching work

A．creating new knowledge
B．providing solutions to social problems
C．making experts on sophisticated industries out of their students
D．preparing their students to transmit inherited knowledge