Hints：
英式拼写
Welcome to our national park. My name is Linda, your tour guide today. You have made a right choice to be here in Spring, the best time of the year because summer is a bit hot and winter too cold. Our park is famous for its 20-kilometre-long valley, a home to thousands of plants and animals. For today's tour, we have arranged a 50-minute valley walk in the morning. You will see beautiful flowers, strange rocks and natural waterfalls. Animal lovers can also have a closer view of different wildlife. In the afternoon, you will have a chance to experience some enjoyable activities such as boating and fishing. If you'd like, you may have a picnic by the lake, the best loved activity in our park. Now let's get on the bus and start our tour.