group wind your way through many of the magical lands throughout the park.

　　Know Before You Go

　　View important information including experience details, guest restrictions and cancellation policies.

　　◆Children and the young at heart will enjoy this imaginative adventure, though it is best suited for guests 4 to 10 years of age. Guests 17 years of age and under (free) must be accompanied by a paying adult (18 years of age or older).

　　◆Please note that the tour involves a lot of outdoor walking for about 2 hours, so be sure to check the weather forecast and dress properly, including wearing comfortable shoes. Accordingly, the tour may be too difficult for some of our younger guests.

　　◆Please check in at the Chamber of Commerce building close to City Hall 15 minutes before your experience. You will lose the entire price of your tour if you don't show up or cancel within 2 days of your reservation.

　　◆Same-day bookings are available on a walk-up basis only.

21. What is encouraged to carry when travelling?

　　A. A camera. B. A hat.

　　C. A mirror. D. A ticket.

22. How much should be paid if a ten-year-old boy and his parents experience the park?

　　A. Nothing. B. 39 dollars.

　　C. 78 dollars. D. 117 dollars.

23. Why should the guests check the weather forecast and dress properly before the tour?

　　A. The tour includes about 2-hour outdoor walking.

　　B. The guests are so young that they can't walk.

　　C. The bad weather can stop the normal tour.

　　D. The guests dress properly to make the tour happy.

　　When Gitanjali Rao shared how she likes "finding solutions to real problems", it was hard to imagine this dynamic 11-year-old girl could settle a problem that has escaped scientists for years.

In just three months, Rao came up with a device（装置）that can replace the costly and lengthy tests currently used to reliably determine lead levels in our fresh water. Inspired by the current litigation （诉讼）in Flint, Michigan, a case of water pollution