Fifty years ago, China successfully launched its first satellite, Dongfanghong 1, and started     1     new chapter in space exploration.     2     (mark) its 50th anniversary, the China National Space Administration announced the name for the country’s Mars planetary exploration program on April 24. The mission, Tianwen got its name from a long poem Tianwen     3     (write) by Qu Yuan, a famous poet of the Warring States Period. In the poem, Qu raised a series of questions     4     (concern) the sky, stars, natural phenomena, myths and the real world, reflecting his doubts on traditional ideas     5     his pursuit of truth. So far, China     6     (make) remarkable progress in space exploration. In 1970, China launched its first man-made Earth satellite, becoming the fifth country in the world to launch man-made satellites     7     (independent). Over the past few years, China’s missions, including the Shenzhou and Change series were designed to explore outer space, expanded     8     (mankind) understanding of Earth and the universe. This time, the Tianwen series will carry out the first Mars exploration mission,     9     represents a milestone for China’s move toward deep space. With the names deep roots     10     Chinese traditional culture, Tianwen demonstrates the determination and perseverance of Chinese people to move further into deep space.