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【单选题】
一个成熟植物的根细胞可以被诱导长成一个发育成熟的植株,这个实验表明A.
分化的细胞仍保留了所有的遗传信息
B.
根细胞与叶细胞不相同
C.
在分化过程中，细胞丢失了不需要的染色体
D.
细胞培养是一个对于动物细胞与植物细胞都十分重要的技术
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举一反三
【简答题】微生物学发展的奠基者是法国的
【单选题】Extra guards were hired. ____, a new security system was installed.
A.
Addition
B.
In addition
C.
In addition to
【简答题】A．They were offered free dinners for life. B．They were recruited as guards of honor. C．They traveled freely inside the state. D．They received awards in the temple of Zeus.
【简答题】A new security system was installed. ( 3 ) , extra guards were hired. ( in addition )
【简答题】3) A new security system was installed. ____________, extra guards were hired.
【单选题】A new security system was installed. ____________, extra guards were hired.
A.
Simply stated
B.
Believe me
C.
In that case
D.
In addition
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