最高额抵押设立时，抵押财产确定，担保的债权不确定。浮动抵押设立时，担保的债权确定，抵押财产不确定。

A. 当事人约定的实现抵押权的情形

B. 抵押人被工商机关吊销营业执照后撤销

C. 债务履行期届满，债权未实现

D. 抵押人被宣告破产

B．备用信用证

C．意愿书

D．浮动抵押

A. 最高额住房抵押担保贷款

B. 最高额质押担保贷款

C. 最高额商用房抵押担保贷款

D. 最高额保证担保贷款

A. 约定的债权确定期间届满

B. 新的债权不可能发生

C. 抵押财产被查封、扣押

D. 债务人、抵押人被宣告破产或者被撤销

A、Strike while the iron (铁) is hot.

B、While he loves his students, he is very strict with them.

C、I like dogs, while my wife hates them.

D、Her parents died while she was still at school.