阅读下列短文，从每题所给的A、B、C、D四个选项中选出最佳选项。
A
Welcome to the Sydney Opera House
Ticket Info and Guided Tours
Visitors can enjoy the Sydney Opera House＇s foyer（前厅）for free， but for a more insightful visit, you'll need to book a tour.
There are several different ways to experience the Sydney Opera House, and multiple tours are available including back-stage passes and walking tours.
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Tour Type
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Adult(AUD S)
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Child
|
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Guided Walking Tour
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$42
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$22
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Guided Walking Tour+ Dinner
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$73
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$52
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Guided Walking Tour+ Tasting Plate
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$82.20
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$64.80
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|
Back-stage Tour
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$175
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$175
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Opening Hours and the Best Time to Visit
The Sydney Opera House is open year-round with the following opening hours:
●Monday-Saturday: 9:00 a.m.-8:30 p. m.
●Sunday:9:00 a.m.-5:00 p.m.
As for the best time of day, it's recommended to book the earliest Sydney Opera House tour of the day to beat the crowds. To enjoy sunny weather with fewer crowds, try visiting in the shoulder season(October, November, February or March).
Points of Interest
●The Steps
Before entering the Opera House, take a picture of the building from the steps outside.
·●The Sails
Step beneath the sails on a guided tour and enjoy harbor front views.
●The Concert Hall
The Concert Hall is the largest venue with seats for more than 2,000 people. It features contemporary live music shows and highly-regarded orchestral（管弦乐的） performances. It is also here that you will find the world's largest mechanical tracker-action pipe organ.
●Opera Bar
After your tour, head to the Opera Bar for a bite to eat or drink in the sun.
●Badu Gili
Badu Gili, which is “water light” in the language of the Gadigal people, takes place most evenings after sunset at 9:00 p. m. , 9:30 p. m. , and 10 p. m. The seven-minute display is free to view.
21.How much will a Guided Walking Tour including supper for two adults cost?
A.$73. B.$84. C.$146. D.$164.40.
22.Which of the following is the best time to visit the Opera House with fewer crowds?
A.9:30 a.m., a Monday in February.
B. 10:00 a.m., a Sunday in December.
C.5:00 p.m., a Friday in September.
D.6:00 p.m., a Saturday in March.
23.What is Badu Gili?
A. A local language. B. A water sport.
C. A light show. D. A dinning area.
