单选题 What should the teacher try to avoid when selecting listening activities?

A、 The listening activity must have a real, communicative purpose.
B、 The listening activity must cater to students' real life.
C、 Pre-listening tasks must help students identify the purpose of the listening activity.
D、 The classroom climate surrounding the listening activity can be anxious.

【正确答案】 D

【答案解析】解析：考查听力教学。为保证听力活动的效果，课堂气氛应是轻松活跃的。故选D。