What type of approach does the student apply to listening according to what he describes? “When I listen to English tapes, I am always worried about my limited vocabulary. I tend to figure out its actual meaning when coming across an unknown word, so that stop makes me mist the next part of the speech.” ( )
选项：

A:Detailed-oriented approach.
B:Top-down approach.
C:Interactive approach.
D:Bottom-up approach.