题目内容：

The Code of Visiting Yellowstone National Park

The following regulations have been sorted for your convenience.

Emergency Phone: Dial 911

Yellowstone is a wilderness filled with natural wonders that also have potential dangers. There is no guarantee of your safety. Regulations are strictly enforced to protect you and the park's resources.

Wildlife

Do not approach wildlife, no matter how calm they appear. Always obey instructions from park staff on the scene.You must stay at least 100 yards away from bears and wolves and at least 25 yards away from all other large animals-bison, elk, bighorn sheep, deer, moose, and coyotes. Do not feed any animal. It harms them and it is illegal.

Geothermal (地热的) Dangers

Boardwalks and trails protect you. You must stay on boardwalks and designated (指定的) trails. Pools may be near or above the boiling temperatures and can cause-severe r possibly even deadly burns.

● Keep your children close to you at all times; make sure they understand the danger.

● Pets are prohibited in thermal areas.

● Swimming or bathing in thermal pools or streams is prohibited. Where swimming is allowed, swim at your own risk.

● Poisonous gases may exist at dangerous levels. If you feel sick, leave immediately. Weather Yellowstone's weather can change quickly and bring cold temperatures, high winds, rain and falling snow.

● Be prepared for changing temperatures, storms, and emergencies.

● Carry adequate clothing.

Driving

● Unless otherwise posted, the top speed throughout the park is 45 mph.

● If you see wildlife while driving, do not stop or pause in the roadway.

1.What do we know about Yellowstone National Park?

A.It allows visitors to feed some animals.

B.It gives visitors a free ride in the park.

C.It will punish visitors if they bring their pets.

D.It not only offers visitors pleasure but also there may be dangers.

2.When visiting Yellowstone, what are you advised to do?

A.Swim in the designated places.

B.Tap those calm animals gently.

C.Pull up to take photos of animals.

D.Bring some cloths to avoid poisonous gases.

3.Why is the text written?

A.To explain the facilities of the park. B.To introduce the features of the park.

C.To offer some guidance to visit the park. D.To attract more people to visit the park.