【单选题】(Watch the video 00:00-05:45)In the introduction, the teacher wrote several phrases on the blackboard. What could be the possible reasons for the teacher to do so?
A.
She may want to help students solv e problems.
B.
She may want to introduce language .
C.
She may want to do b rainstorming with students.
D.
She may want to help students better u nderstand the problem .