（ ）3. What did Chris suggest doing when it was raining heavily?
A. Lighting a fire.
B. Making a compass.
C. Putting up a tent.
D. Running to the campsite.

（ ）4. Why couldn't they light the fire?
A. Because they didn't have matches.
B. Because it was too windy.
C. Because they were too tired.
D. Because everything was wet.

（ ）5. What did the writer learn from the trip?
A. The beauty of nature.
B. How to use a compass.
C. The importance of teamwork.
D. How to put up a tent.

B
National parks are large areas of public land. They give a safe home for local plants and animals. They help keep the air and water clean. Forbes has listed 12 of the most beautiful national parks in the world that will surprise you with their amazing landscapes， geographic wonders and colourful plants and animals.
The Grand Canyon（大峡谷）National Park of the US is one of the Seven Natural Wonders of the World. It is best known for its size and depth. It's 446 kilometres long， up to about 29 kilometres wide and 1.6 kilometres deep. The immensity of the canyon makes people think big. Taking a tour in the South Rim offers visitors the park's full views， while the North Rim shows beautiful wild flowers.
If you love animals， you'll like the Serengeti National Park in Tanzania. The "Big Five" live here. They are African lions， African elephants， African leopards， black rhinoceros and African buffalos. The name "Big Five" came from the five animals that were the hardest to catch. Now they are what people most want to see in the wild. If you visit the park， you should never miss the migration of over 1.5 million wildebeests（角马）and over 200，000 zebras every year. This is the most famous site of the park.
（ ）6. What is the main purpose of national parks according to the passage?
A. To offer a place for people to have a picnic.
B. To give a safe home for local plants and animals.
C. To surprise tourists with beautiful landscapes.
D. To protect endangered animals only.