题目

在某小学“演讲大赛”选拔赛初赛中，甲、乙、丙三位评委对小选手的综合表现，分别给出“待定”（用字母W表示）或“通过”（用字母P表示）的结论．（1）请用树状图表示出三位评委给小选手琪琪的所有可能的结论；（2）对于小选手琪琪，只有甲、乙两位评委给出相同结论的概率是多少？（3）比赛规定，三位评委中至少有两位给出“通过”的结论，则小选手可入围进入复赛，问琪琪进入复赛的概率是多少？Tayka Hotel De Sal Where: Tahua, Bolivia How much: About $95 a night Why it’s cool: You’ve stayed at hotels made of brick or wood, but salt? That’s something few can claim．Tayka Hotel de Sal is made totally of salt—including the beds (though you’ll sleep on regular mattresses (床垫) and blankets)．The hotel sits on the Salar de Uyuni, a prehistoric dried-up lake that’s the world’s biggest salt flat．Builders use the salt from the 4,633-square-mile flat to make the bricks, and glue them together with a paste of wet salt that hardens when it dries．When rain starts to dissolve the hotel, the owners just mix up more salt paste to strengthen the bricks. Green Magic Nature Resort Where: Vythiri, India How much: About $240 a night Why it’s cool: Ridding a pulley(滑轮)-operated lift 86 feet to your treetop room is just the start of your adventure．As you look out of your open window—there is no glass!—you watch monkeys and birds in the rain forest canopy．Later you might test your fear of heights by crossing the handmade rope bridge to the main part of the hotel, or just sit on your bamboo bed and read．You don’t even have to come down for breakfast—the hotel will send it up on the pulley-drawn “elevator”. Dog Bark Park Inn B&B Where: Cottonwood, Idaho How much: $92 a night Why it’s cool: This doghouse isn’t just for the family pet．Sweet Willyis a 30-foot-tall dog with guest rooms in his belly．Climb the wooden stairs beside his hind leg to enter the door in his side．You can relax in the main bedroom, go up a ffew steps of the loft(阁楼）in Willy’s head, or hang out inside his nose．Although you have a full private bathroom in your quarters, there is also a toilet in the 12-foot-tall fire hydrant (消防栓）outside. Gamirasu Cave Hotel Where: Ayvali, Turkey How much: Between $130 and $475 a night. Why it’s cool: This is caveman cool! Experience what it was like 5,000 years ago, when people lived in these mountain caves formed by volcanic ash．But your stay will be much more modern．Bathrooms and electricity provide what you expect from a modern hotel, and the white volcanic ash, called tufa, keeps the rooms cool, about 65℉in summer．(Don’t worry—there is heat in winter.) 1.What do we know about Tayka Hotel de Sal? A．It is located on a prehistoric lake. B．It should be protected against the rain. C．Everything in the hotel is made of salt. D．You have to cross a rope bridge to the hotel. 2.What is the similarity of the four hotels? A．Being expensive.    B．Being comfortable.  C．Being natural.      D．Being unique. 3.What does the underlined part “Sweet Willy” refer to? A．The name of the hotel.                    B．The name of the hotel owner. C．The building of Dog Bark Park Inn B&B.   D．The name of a pet dog of the hotel owner. 4.Which of the hotels makes you have a feeling of living in the far past? A．Tayka Hotel De Sal                       B．Green Magic Nature Resort C．Dog Bark Park Inn B&B                   D．Gamirasu Cave Hotel 5.What may be the purpose of the writer writing the passage? A．To show his wide knowledge.              B．To introduce some interesting hotels. C．To develop business in tourism.             D．To attract attention from the readers.