43. The discovery of life beyond Earth would transform not only our belief systems but also our entire world view. For in a sense, the search for extraterrestrial life is really a search for ourselves ─ who we are and what our place is in the cosmos. In fact, the idea that we are not alone in the universe may start long ago in human history. ____________
(A) Nevertheless, astronomers increasingly suspect that other forms of life may be abundant in the universe.
(B) Therefore, this is not just the matter of physics; it is also related to philosophy.
(C) After all, advanced technology is more available now.
(D) Similar reasoning applies to evolution, too.

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