问题
选择题
All the universities have duty to _______ their students ____of the quick development of the scientific world.
A．make; known
B．have; understood
C．keep; informed
D．find; included
答案
答案：C
考查词组：keep sb informed of“及时告知某人某事”，句意是：所有的大学有责任及时通知学生科学领域最快的发展。选C。