单选题 What is False according to the passage?

A、 There are many planets which are like the earth.
B、 We have been sending radio messages to the outer space since the beginning of the last century.
C、 The distance between us and other inhabitants of the universe is perhaps too large to be conquered.
D、 There are probably other intelligent life like us existing somewhere in the universe.

【正确答案】 B

【答案解析】[分析] 文章说到人类只是在五十年前才能够向太空发射电波。