The idea of traveling through ______ space to other planets inte

The idea of traveling through ______ space to other planets interests many people today.
A、a
B、the
C、/
D、one
【正确答案】：C
【题目解析】：穿越到太空到别的星球上去的想法吸引着今天的很多人。space在这里是泛指，所以不加冠词。