阅读短文，根据其内容回答问题。     Five million people visit Grand Canyon in the US every year.

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阅读短文，根据其内容回答问题。     Five million people visit Grand Canyon in the US every year. For the purpose of helping protect Grand
Canyon for your fellow visitors and future generations, please follow the guidelines below.
     Camping To protect the park, camping is allowed only within permitted camp-grounds. Permits are
required for ovemight camping at the North Rim. Advance book- ing can be received by mail. Please write:
Information Center, P.O. Box 129, Crand 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 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 Grand 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 Grand Canyon National Park where
deer were purposely shot because there 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. 1. Do five million people visit Grand Canyon in the US every year?
    ____________________________________________________________________
2. Why aren"t campfires allowed except at Mather and Desert View campgrounds? 
    ____________________________________________________________________
3. How is the weather at Grand Canyon? 
    ____________________________________________________________________
4. How many guidelines are there in this passage? 
    ____________________________________________________________________
5. What is the main purpose of the passage? 
    ____________________________________________________________________

答案

1. Yes. /Yes,they do.
2. Because of the extreme fire danger.
3. It can change very quickly.
4. Five. /5
5. To provide travel information and tell us what to do to protect Grand Canyon.
答案不唯一