阅读下面的短文,然后从A-F选项中,为每一小段选择合适的标题, 并把答案写在答案卷上。
| A. The most common problem is a “wandering” mind B. Selective listening is also a mental barrier C. Listening isn’t an easy skill to master D. Attitude can also influence good listening E. Noise and background music makes listening more difficult F. Listening is also related to the level of the listener’s knowledge |