Question

   Five million people visit Grand Canyon in the US every year. For the purpose of helping project Grand Canyon for your fellow visitors and future generations, please follow the guidelines below.

Camping

To project the park, camping is allowed only within permitted campgrounds. Permits are required for overnight camping at the North Rim. Advance booking can be received by mail. Please write: Information Center, P.O. Box 129, Grand Canyon, AZ 86023

Fires

Because of the extreme fire danger, campfires are not allowed except at Mather and Desert View campgrounds. Collection of firewood is not allowed either.

Hiking(远足)

Please stay on permitted paths. Otherwise you may destroy desert plants. Pack out what you pack in, so you leave no signs of your visit. It is important to keep in mind that you are in a national park where wildlife exists.

Weather

The weather at Gramd Canyon can change very quickly. With so much rock, lightning(闪电) causes a particular danger during sudden summer storms. These storms also frequently bring floods inside valleys, a danger to hikers. Watch the skies and check daily weather reports.

Wildlife

Do not feed park wildlife. There have been a few cases at Gramd Canyon National Park where deer(鹿) were purposely shot because they ate plastic bags that left them sick and weak. Hungry deer can be danger and have kicked and bitten visitors at Grand Canyon. Some other animals will also beg and bite. For your own safety and the well-being of the animals, please do not feed wildlife, no matter how gentle they may appear.

47. What can you do first if you want to go camping?

   A. Know the permitted                   B. Book campgrounds in advance

   C. Make sure not to make a fire           D. Stop at Mather and Desert View

48. What do the underlined words “pack out what you pack in” in Paragraph 4 probably mean?

   A. keep every out of campgrounds

   B. take away everything you bring in

   C. carry all the necessary food

   D. look after your personal belongings

49. Why were some deer killed on purpose at Grand Canyon?

   A. They ate wrong things and became very ill.

   B. They were a danger to other gentle animals.

   C. They begged food from visitors.

   D. They kicked and bit visitors.

50. What is the main purpose of the text?

   A. To provide travel information            B. To report some recent news.

   C. To teach tourists hiking skills             D. To introduce the wild life

Answer 1

解析：47  B 细节理解题。

从第二段内容To project the park, camping is allowed only within permitted campgrounds. Permits are required for overnight camping at the North Rim. Advance booking can be received by mail.可知。野营要受地域限制，去前可以通过发邮件预定

48 B。句意理解题。

从该句后部分so you leave no signs of your visit可知离开时要把打包带去的东西再打包带走，以保护公园的环境。

49 A。细节理解题。

从文章最后一段的…deer(鹿) were purposely shot because they ate plastic bags that left them sick and weak. 可知答案。

50 A。主旨大意题。

 从文章第一段的For the purpose of helping project Grand Canyon for your fellow visitors and future generations以及后面每一节的标题可知该篇文章的主要目的是提供一些旅游信息。