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【单选题】
数量性状的遗传理论是( )。A.
显性假说
B.
超显性假说
C.
多基因假说
D.
超亲遗传
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举一反三
【简答题】--- Do you enjoy your stay in China, Jim?--- Yes, I've had ( )wonderful time.A. / B. a
【简答题】--- Do you enjoy your stay in China, Jim? --- Yes, I've had _____ wonderful time.
【单选题】— Jim, how did your English test go? — I had thought I ________, but luckily I came top in the list in class.
A.
should have failed
B.
could have failed
C.
need have failed
D.
might have failed
【单选题】--- Do you enjoy your stay in China, Jim? --- Yes, I've had wonderful time.
A.
/
B.
a
C.
the
D.
an
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