问题补充：
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 are 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.
【小题1】What can you do first if you want to go camping?A．Know the permittedB．Book campgrounds in advanceC．Make sure not to make a fireD．Stop at Mather and Desert View【小题2】What do the underlined words “pack out what you pack in” in Paragraph 4 probably mean?A．keep every out of campgroundsB．take away everything you bring inC．carry all the necessary food D．look after your personal belongings【小题3】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.【小题4】What is the main purpose of the text?A．To provide travel informationB．To report some recent news.C．To teach tourists hiking skillsD．To introduce the wild lifeB
答案：
(答案→)B
解析：
【小题1】这是一篇广告性质的文章，如果要去野营，必须先提前申请，这是首先要做的事。第二段“Advance booking can be received by mail”应该是发生在最前面的事。
【小题2】推理判断题，从它后面一句“so you leave no signs of your visit”可知，别乱扔垃圾。
【小题3】细节判断题，从最后一段第二句可知道答案。
【小题4】主旨大意题，本文主要是讲要去哪儿旅游的必要注意事项。第一段中please follow the guidelines below.可知道答案。
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