蛋白质变性的本质是
A．肽键断裂
B．辅基脱落
C．亚基解聚
D．一级结构破坏
E．空间结构破坏
参考答案：E
Our first moon explorer, Chang'e I satellite (卫星), ______ from the Xichang Launch Center at 6: 05 pm
on October 24, 2007.[ ]
A. took off
B. took out
C. took away
