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【单选题】
It is clear that no use can be made ______radium _____ we don’t know clearly the characteristics of it. [ ]A.
from; if
B.
of; unless
C.
from; unless
D.
of; if
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举一反三
【单选题】Recently I was an observer at _____ parent education seminar about the depression, suicide, and anxiety disorders affecting _____ children.
A.
the ; the
B.
the ; a
C.
a ; /
D.
a ; the
【单选题】In my twenties, I was______to anxiety and depression, which I experienced as a depletion of my self-esteem.
A.
inclined
B.
accountable
C.
prone
D.
poised
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