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 that the Martian surface was like that of the Moon's in that it was pockmarked by moonlike craters and was dry and apparently dead.