问题
选择题
In a chemical change, energy cannot be created ,____.
A．nor can it be destroyed
B．not it be destroyed
C．so can’t it not be destroyed
D．either it cannot be destoryed
答案
答案：A
搜题请搜索小程序“爱下问搜题”
In a chemical change, energy cannot be created ,____.
A．nor can it be destroyed
B．not it be destroyed
C．so can’t it not be destroyed
D．either it cannot be destoryed
答案：A