单项选择题According to the passage, one of the causes fur the difficulties of American higher education is that ______.
单项选择题A serious outcome brought out by the shortage of resources is that ______.
单项选择题According to the author,______ is the most important function of institutions of higher education.
单项选择题Which of the following statements is NOT TRUE
单项选择题According to the passage, how do students in class often react to another student's research