单项选择题

The theory of the origin of the universe is just ______ and lacks proof.

A．spontaneous
B．hypothetical
C．intuitive
D．empirical
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单项选择题
When Graham didn't come home from school, we were very worded about him. But fortunately he came to no ______.
A．injury
B．hurt
C．harm
D．damage
单项选择题
The international situation has been growing ______ difficult for the last few years.
A．invariably
B．presumably
C．increasingly
D．dominantly
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