Travelling the world is a common thing for most families these days. One destination that may seem q

本文是一篇应用文，介绍了三个有特色的旅游目的地。
【21题详解】
细节理解题。根据第二段“Beaches on the Indian Ocean are fantastic and tourists can enjoy the sun and the warm waves washing back and forth to the shores.”（印度洋的海滩非常棒，游客可以享受阳光和温暖的海浪来回冲刷海岸）可知，去印度洋的海滩可以享受温暖的海水，故选A。
【22题详解】
细节理解题。根据第三段“Among all these wildlife parks, Kruger National Park in the North stands out as the largest and most famous.”（在所有这些野生动物园中，北部的克鲁格国家公园是最大、最著名的）可知，克鲁格国家公园独特之处是特别大，故选A。
【23题详解】
推理判断题。根据最后一段“When it comes to exciting activities, South Africa satisfies its tourists with different activities to choose from, such as skydiving, white water rafting, paragliding, and shark cage diving. The kids are never left out as there are lots of fun activities available to them as well as interesting places to visit.”（在令人兴奋的活动方面，南非为游客提供了不同的活动选择，如跳伞、白水漂流、滑翔伞、鲨鱼笼潜水。孩子们永远不会被忽视，因为有很多有趣的活动可供他们选择，还有有趣的地方可以参观）可知，南非为孩子们提供了丰富多彩的娱乐活动，因此，有小孩的家庭可能会对去南非度假感兴趣，故选C。