--Are these your books?

--Yes,    

A．they're

B．they are

C．these are

D．these're

治疗应

A．补液，纠正休克

B．应用抗生素和激素

C．立即手术

D．胃肠减压，纠正休克，维持水，电解质平衡

E．胃肠减压，抗胰酶，解疼痛