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【单选题】
关于复制、转录和逆转录的叙述,下列说法错误的是A.
逆转录和DNA复制的产物都是DNA
B.
转录需要RNA聚合酶,逆转录需要逆转录酶
C.
转录和逆转录所需要的反应物都是核糖核苷酸
D.
细胞核中的DNA复制和转录都以DNA为模板
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举一反三
【单选题】Dear, you need to by next week, to go to university at home or to go abroad.You are going on eighteen. OK, Mum. I am considering it.
A.
make an appointment
B.
make a suggestion
C.
make a decision
【简答题】在三相五线制供电系统中,一根相线与另外一根相线之间的电压称为 ____ 。通常国内该电压为 ____ V。一根相线与零线之间的电压称为 ____ 。通常国内该电压为 ____ V。
【单选题】—Would you like me to go to the dentist with you? —No, you______with me.
A.
need not to go
B.
need not go
C.
do not need go
D.
not need go
【单选题】I want to go to the cinema, but you _____ with me.
A.
need not to go
B.
do not need go
C.
need not go
D.
need go not
【单选题】I want to go to the dentist, but you ______ with me.
A.
need not to go
B.
do not need go
C.
need not go
D.
need go not
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