下列合同中，属于可变更、可撤销合同的有（）。

A．施工企业超越资质等级订立的合同

B．施工企业中未获得相应授权的人员订立的合同

C．建设单位为洗钱而订立的施工合同

D．显失公平的合同

E．一方乘人之危与他人订立的合同

A series of stimulus policies and supportive measures taken by the government _____ to promote change in the economic environment in this area.

A．are expecting

B．are expected

C．is expecting

D．is expected