______the universe could never die was once believed by scientists.A.ForB.WhyC.ThatD.While
______the universe could never die was once believed by scientists.
A.For
B.Why
C.That
D.While
______the universe could never die was once believed by scientists.
A.For
B.Why
C.That
D.While
第1题
The opinion of the writer is that ______ .
A.there may be other intelligent beings in the universe
B.there are other intelligent beings in the universe
C.people living on the earth are almost certainly the only intelligent beings in the universe
D.people living on the earth are definitely the only intelligent beings in the universe
第2题
A.正确
B.错误
第3题
What does the author see as the function of the universe's unseen "switches"?
A.They tell us which one of the tracks the universe will use.
B.They enable us to alter the course of t he universe.
C.They give us information about the lunar surface.
D.They determine which course the universe will take in the future.