The author believes in the passage that ______. All of the following are steps involved in true cloning EXCEPT ______.

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问题 The author believes in the passage that ______.
All of the following are steps involved in true cloning EXCEPT ______.

选项 A、selecting a stem cell
B、taking a developed cell
C、reactivating the genome within the developed cell
D、resetting the developmental instructions in the cell to its original state

答案A

解析 这是一道细节题。题干中的信号词为true cloning,出自于文章第五段第二句话。文章第五段第二句话指出:真正的克隆包括提取一个发育的细胞、重新激活胞里面的基因组、重新设置它的发育指令使其恢复到原始状态。这说明,B、C和D都是真正的克隆包含的内容。只有A文中没有提到。
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