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【单选题】
下列量子数取值错误的是:A.
3,2,2,1/2
B.
3,2,0,-1/2
C.
3,1,2,-1/2
D.
3,2,1,1/2
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举一反三
【单选题】My father used to smoke more than ____ was good for his health.
A.
what
B.
which
C.
that
D.
this
【单选题】My father smoke heavily, but now he doesn't smoke any more. [ ]
A.
use to
B.
was used to
C.
used to
D.
was used