UNIT 6 课时跟踪检测3 阅读写作融会练（Word练习）-【新课程学案】新教材2023-2024学年高中英语选择性必修第一册（外研版2019）

UNIT 6 课时跟踪检测（三） 阅读写作融会练 Ⅰ.阅读理解 Every year from May to July, tens of thousands of Tibetan antelopes from regions in Qinghai, the Tibet autonomous region, and the Xinjiang autonomous region make their way to the Hoh Xil Nature Reserve in Qinghai to give birth. The mothers and newborn Tibetan antelopes make the return trip around August. This journey is rather tough. More than 90 percent of the female animals give birth every year, but only about 30 percent of the newborns survive. Many of them die on the return journey, unable to withstand the predators (捕食性动物) and diseases. The government has adopted some high­tech methods to assist in the safe return of newborn antelopes and protect the species. In 2013, with the help of the Beidou Navigation Satellite System, researchers discovered and confirmed the largest Tibetan antelope “birth room” on the Qinghai­Tibet Plateau, and they mapped the migration routes of Tibetan antelopes. Since late 2018, a solar­powered drone has been used to monitor the migration herds. “The solar­powered drone has a long flying time with high­resolution cameras, which gives us a new understanding of many specific routes during the migration of Tibetan antelopes，” said Wu Xiaomin, an expert from the Shaanxi Institute of Zoology. “For example, the nomads (游牧民) put fences on the grassland to protect the grass, but sometimes these hinder the normal activity of the Tibetan antelopes.” To clear the way for the Tibetan antelopes, the government of Tibet has taken action in recent years to give more protected space to wildlife. They relocate nomads from places at altitudes above 4，800 meters to other places in the region. Known as “plateau elves”， Tibetan antelopes have adapted to the unique and severe natural conditions of the Qinghai­Tibet Plateau. According to Wu, the Tibetan antelope is recognized as an important indicator species of the natural ecosystem. The population of Tibetan antelopes has grown. “With a recorded low population of fewe