某地区一日的气温如下，8点测得3℃，14点测得9℃，20点测得1℃，2点测﹣1℃，该地区这一天的日平均气温为（　　）

   According to the Center of Disease Control and Prevention (CDC) (疾病控制中心), if you don’t often wash your hands, you can pick up viruses (病毒)from many places and make yourself ill. You’re at risk every time you touch your eyes, nose or mouth. In fact, one of the most common ways people catch colds is by rubbing their noses or their eyes when there are cold viruses on their hands. If you don’t often wash yours hands, specially when you’re sick, you may spread the viruses directly to others. You should wash your hands in the following situations:
After using the bathroom
After blowing your nose or coughing
Before eating, serving or preparing food
After touching pets or other animals
After visiting anyone who is sick
When your hands are dirty
There is a right way to wash your hands. Follow these simple steps to keep your hands clean.
Use warm water (not cold or hot)
Wash for 15 seconds
Rinse (冲洗) well under warm water and dry them with a clean towel.
Information Card

如图示意某旅游目的地，该地旅游资源丰富，但旅游规模相对较小。

分析该地旅游规模相对较小的原因。