What is NOT mentioned about the trip?
A:Days of the trip.
B:Places to visit.
C:Price of the trip.
D:Meals during the trip.
下面漫画的主题是( )
学习效率的高低,在某种程度上决定着学生的学习成绩的好坏。下列学习方法有利于提高学习效率的有( )
在△ABC中,若CA→+CB→·AB→=AB→2,则( )