题目内容：

National parks across the USA offer visitors more than just hiking paths and points of interests. Park guests can now get to know their beautiful landscapes and rich histories in a whole new way with these adventure ideas.

• Golfing in Death Valley National Park

You’ve played the world’s best golf courses，but have you played the world’s lowest? Put the ball at the Furnace Creek Golf Course located in California’s remote Death Valley National Park. In addition to golf, the course also sets the stage for a horse-drawn carriage sightseeing offered through the resort’s Furnace Creek Stables.

• Luxury Camping in Yellowstone National Park

Want to experience sleeping under the stars? Far and Away Adventures serves up luxury-camping trips into Yellowstone National Park, covering States of Wyoming, Montana and Idaho, complete with comfortable bedding and tents, delicious meals, and backcountry adventures. Guests are guided to a remote campsite along Yellowstone Lake by boat, and spend several days boating along its shores, fishing, and hiking among some of the park’s most original landscapes.

• Dog sledge in Denali National Park

Experience a dog sledge trip through one of the last wild frontiers(边疆), Denali National Park and Preserve in Alaska. A team of dogs and experienced guides from EarthSong Lodge lead guests into the remote and calm land inside Alaska. Although day trips are available, multi-day sledge travels allow visitors to learn the art of dog dragging, not to mention enjoying grand views of Mt. McKinley.

• Canyon Vistas Mule Ride in Grand Canyon National Park

Take in the Grand Canyon, located in State of Arizona, by four-footed mule(骡子) for breathtaking views along the edge and into its depths. Mule rides have been offered at the Grand Canyon since 1887, and are a rich part of the canyon’s history. A new four-mile tour along the edge, the Canyon Mule Ride, takes approximately three hours to complete. Along the path, riders speak to the geologic shapes and human history of the area.

1.Among the national parks mentioned above, how many of them offer animal service for guests to enjoy beautiful natural scenery?

A. one    B. two

C. three    D. four

2.Which of the following is TRUE according to the passage?

A. The four national parks are located in different states of the USA.

B. In Death Valley National Park, guests can play the world’s best golf courses.

C. Of the four national parks, Yellowstone National Park covers the largest area.

D. Park visitors have recently been offered mule rides in Grand Canyon National Park.

3.If you are keen to learn about the geologic features of the park, you may choose to visit        .

A. Death Valley National Park    B. Yellowstone National Park

C. Denali National Park    D. Grand Canyon National Park