学校教育影响的发挥需要经过一个长期的过程。
参考答案：错
At the Copenhagen conference, all the countries were called on to do all they could to control greenhouse gas emissions________it was too late.
A．when
B．after
C．until
D．before
企业的总分类账应该（）更换一次。
A、每年
B、每季度
C、每月
D、每周
