单项选择题

Whoever formulated the theory of the 'origin of the universe, it is just ______ and needs proving.

A. spontaneous
B. hypothetical
C. intuitive
D. empirical
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单项选择题
Some scientists are dubious of the claim that organisms ______ with age as an inevitable outcome of living.
A. depress
B. default
C. deteriorate
D. degrade
单项选择题
This is an ideal site for a university ______ it is far from the downtown are
a.A. provided thatB. now thatC. so thatD. in that
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