有效合同价是指包括暂定金额和计日工费用在内的合同价格。 ( )
参考答案:错
---Did you do anything last week?
---I _________ to go skiing or do some shopping, but ______ studying.
A.had planned, ended up
B.planned, ended up
C.had planned, end up
D.planned, end up
试述邓 * * 理论的历史地位和指导意义。