题目内容：

请阅读下面短文，从每小题所给的A、B、C三个选项中，选出一个最佳选项，并在答题卡上将该项涂黑。

At 8,844.43 meters high, Mount Qomolangma is the tallest mountain on Earth. While it is famous for its beautiful views, parts of the mountain are facing a problem: garbage. Every year, thousands of visitors throw away tons of garbage. The garbage found on Mount Qomolangma has caused serious pollution. It is bad for water farther down in the mountain’s valley （山谷）. The polluted water and soil on the mountain has already been a cause of environmental concern （担 忧）in China, Nepal and India.

According to the UN, over 140 tons of garbage has been left on the mountain. To deal with the garbage, China started to limit the number of people who were allowed to climb up the north side of the mountain in 2019. Only 300 people will be allowed to climb it, and only during spring.

Local residents （居民）collected about 8. 4 tons of garbage at heights of 5,200 meters and above in 2018. The local government is also setting up stations to sort（分类），recycle and break down garbage collected from the mountain. A group of artists will also try to turn the garbage into artwork. They will show these works of art to remind people not to leave garbage behind when climbing the mountain.

The focus is for the mountain to be climbed in a scientific and green way. Nowadays, people ——including mountaineers and local people ——are more aware （意识到） of the importance of environmental protection.

1.Mount Qomolangma is facing the problem of ______________.

A.air and food pollution

B.water and soil pollution

C.noise and light pollution

2.China limited the number of climbers on Mount Qomolangma to _________________.

A.help local residents live happily

B.allow people to clean the mountain

C.do with the garbage on the mountain

3.The artists hope their artworks can _____________when climbing the mountain.

A.remind people not to leave waste behind

B.advise climbers to collect and break down garbage

C.call on more people to protect the water in the valley

4.An increasing number of mountain climbers and local people realize that ____________.

A.protecting the environment is important

B.stations can help to turn the garbage into artwork

C.scientists know better about how to climb the mountains

5.The best title of the passage might be ________________.

A.Mountain Climbing B.Garbage or Artwork C.Cleaning Qomolangma