1. (2021·莲湖模拟) 阅读下面短文，从所给的四个选项中选出能回答所提问题或完成所给句子的一个最佳答案。

    The new height of Mount Qomolangma is 8,848.86 meters. The result was announced by China and Nepal together on December 8,2020. The two countries called the mountain "an important symbol of the friendship between Nepal and China".

A team of Chinese surveyors climbed the mountain on May 27,2020. They remained at the peak（峰顶）for nearly two and a half hours. This was a new record for Chinese climbers Some Nepalese surveyors reached the top of the mountain in May. 2019 to carry out measurements（测量）. The two countries reached an agreement on the height of the mountain before the announcement.

In 1975. Chinese surveyors measured Mount Qomolangma as standing 8,848.13 meters above sea level. During that survey, the Chinese team put a survey marker（测标）up on top of the peak for the first time. Another Chinese survey suggested that the mountain's height may have changed after a 7.8-magnitude（震级）earthquake hit Nepal in 2015. comparing with that of 8,844.43 meters in 2005.

1. （1） How long did a team of Chinese surveyors stay at the peak on May 27, 2020?

   A . For about half an hour B . For about an hour. C . For about two hours and a half. D . For about three hours.
3. （2） What can we know from the text?

   A . Nepalese surveyors got to the peak on May 27, 2020. B . A 7.8-magnitude earthquake happened in 2015 in China. C . A survey marker was put up on top of the peak by the Nepalese team. D . Mount Qomolangma is thought to be 8,848.86 meters high
5. （3） What's the best title of the passage?

   A . New Height of Mount Qomolangma B . Relationship between China and Nepal C . Brave Chinese and Nepalese Surveyors D . Uncertain Height of Mount Qomolangma