It is clear that in modern society high and demands are placed on students.
A. motivations
B. expectations
C. standards
D. opportunities
网友回答
A. motivations
(答案→)B. expectations
C. standards
D. opportunities
解析：考查名词词义辨析。句意：显然，在现代社会人们对学生有很高的期望和要求。motivation 动机；expectation期望，要求；standard标准；opportunity 机会。结合句意，此处选用expectations。