本文中的主语从句如下:
1.What it was to become ...
2.What is even more important...
3.It was not..obvious that water was to be fundamental to the development of life.(it为形式主语, that从句就是主语从句作真正的主语)
4.Wha many scientists believe...
5.Why they suddenly disappeared...
6.(So) whether life will continue on the earth for millions of years to come...
拍出来
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