23. What is the author’s attitude to white water rafting?
A. Curious.                               B. Encouraging. 
C. Discouraging.                            D. Negative. 
【解析】选B。推理判断题。根据作者介绍white water rafting时的用词“classic, perfectly suited to the entire family, a great option for any active family vacation”可知, 作者对激水漂流这项运动是持赞成态度的, 故选B。