The adoption of orphans and physically challenged children has been a subject of public debate _______ a fire in an unregistered orphanage last month.

A．according to

B．in case of

C．ever since

D．such as

英国对欧洲政策的重大调整的标志性事件是（）

A、英法关系和解

B、建立欧洲自由贸易联盟

C、放弃海外殖民地

D、申请加入欧共体