题目选项分析

In July 1965 Mariner IV passed by Mars and took the first-ever close-up photographs of another planet, photos that showed a dry, apparently dead Martian surface pockmarked with craters like those on the Moon.

In July 1965 Mariner IV passed by Mars and took the first-ever close-up photographs of another planet, which showed a dry, apparently dead Martian surface, and it was pockmarked by craters like the Moon has.