题目内容：
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 miss the next part of the speech."
A．Detail-oriented approach. B．Top-down approach.
C．Interactive approach.
D．Bottom-up approach.
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