[ ] The man hopes that the prices can be reduced by 3 percent.

问答题[ ] The man thinks the prices are too high.

问答题[ ] The woman thinks that the cost of production has been raising in recent years.

问答题[ ] The prices are given with agreement.

单项选择题By then our experiment had reached ______stage.

A．a profound
B．a best
C．a future
D．a vital

单项选择题The actual cost of the building was much higher than our original_______.

A．consideration
B． judgment
C．estimate
D．plan