二、阅读下面短文，从短文后的选项中选出最佳选项填入空白处。选项中有一项多余选项
The Qinghai-Tibet Plateau(青藏高原) which is known as “the roof of the world” is the highest plateau in the world. It's growing faster and faster.
Though the weather conditions are not the same in different areas of the plateau, they have something in common. 1. The sunshine is strong and the temperature is low. It helps stop the cold wind from North Asia coming into South Asia.
The Qinghai-Tibet Plateau is famous for its beautiful scenery. 2. Mount Qomolangma stands on the southwest of the plateau. Besides, both the Yellow River and the Yangtze River start there and run towards the east. The plateau also has rich natural resources. 3. Many of them can be used as Chinese medicine.
With new technology, the plateau has been developing fast these years. In 2019, a 5G base station was built on the plateau. 4. In 2023, the Fuxing high-speed train series has been running on the Qinghai-Tibet Railway’s Xining-Golmud section. It can travel at a speed of 160 kilometres per hour, which cuts down the travel time.

1.B 2.D 3.C 4.A