family! Pride of Maui is one of our favorite vessels to go out to Molokini. Call 1-877-867-7433.

　　 If you are visiting Maui in winter, you can't miss seeing Maui's famous humpback whales, which come here every year between December and May. The best way to see them is on a whale watching tour. For more about whale watching tours, visit Malolo Charters or call (808) 856-4274.

　　 For adventure lovers, you can't do better than zip-lines ( 高空滑索) in Maui. We have several options for zip-line tours, including Piiholo Zip-line in Makawao, which provides the longest side-by-side zip-line in the state. Call 1-800-374-7050.

　　 For those really interested in experiencing a first-class experience on the ocean in Maui, we recommend a private sailboat tour aboard the Shadowfax, a sailing yacht (快艇 ) departing daily from Maalaea Harbor. With no more than 6 passengers and excellent service from Captain Mike, guests will enjoy beautiful views of Hawaii. Call (808) 572-2345.

21. What is the purpose of the author writing the passage?

A. To show Maui is an excellent place to live in.

B. To make an advertisement for the island of Maui.

C. To share his experience of travelling to Maui.

D. To give advice on how to plan a Maui vacation.

22. What can be inferred from Paragraph II?

A. It isn't easy to see underwater volcanoes on Earth.

B. Many visitors go to Maui for the activity of Pride of Maui.

C. Maui is a place filled with wonderful volcanoes.

D. On the island of Maui underwater activities are popular and meals are free.

23. In which month should you go to Maui if you are interested in whales?

A. August. B. March. C. June. D. November.

24. What should an ocean lover do while he is in Maui?

A. Take a whale watching tour. B. Have a zip-line tour.

C. Have a private sailboat tour. D. Pay a visit to Molokini.