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【单选题】
乳酸脱氢酶同工酶是由H亚基和M亚基组成的A.
二聚体
B.
三聚体
C.
四聚体
D.
五聚体
E.
六聚体
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举一反三
【单选题】If law and order ______ not preserved, people will not he able to live a secure life.
A.
are
B.
were
C.
is
D.
was
【单选题】If law and order ______ not preserved, people will not be able to live a secure life. ( )
A.
are
B.
were
C.
is
D.
was
【简答题】If law and order not preserved，people will not be able tO live a secure life．
【单选题】If law and order______not maintained, neither the citizens nor their properties are safe.
A.
were
B.
are
C.
is
D.
was
【单选题】. If law and order _____, neither the citizen nor his family is safe.
A.
are not preserved
B.
is not preserved
C.
were not preserved
D.
have not been preserved
【单选题】If law and order as well as rules and regulations _____, neither the citizen nor his property is safe. [ ]
A.
are not observed
B.
is not observed
C.
were not observed
D.
was not observed
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