施工组织设计按编制阶段不同可分为（）
A.初步施工组织设计
B.施工组织总设计
C.单位工程施工组织设计
D.实施性施工组织设计
参考答案：A, D
—We're going for a picnic next Sunday, and I'd like you to join us.
—____________！I have to see my grandmother. She has been
ill for two weeks.
A．What a pity
B．Good luck
C．That’s all right
D．Go ahead
