In an experiment conducted last autumn, scientists made exact copies of a human embryo for the first time. After the egg is fer

admin2009-07-11  41

问题 In an experiment conducted last autumn, scientists made exact copies of a human embryo for the first time.
After the egg is fertilized the nucleus begins dividing.

选项 A、Right
B、Wrong
C、Not mentioned

答案C

解析 该句句意为“卵细胞受精后核开始分裂”,但本文并未提到这点。
转载请注明原文地址:https://kaotiyun.com/show/mO1d777K
0

最新回复(0)