Scientific research shows that animals can show         emotions like human beings. They are sometimes lively, and sometimes bad-tempered.

A．contradictory

B．instant

C．appropriate

D．flexible

男，24岁，昨天下午进食海产品，晚上开始腹泻。大便30多次，继之呕吐多次，无发热及腹痛，口渴尿少及腓肠肌痛。查：T36℃，BP90/50mmHg，精神萎靡，腹平软，无压痛。此患者治疗的关键是（）

A.大量抗生素

B.补充液体及电解质

C.肾上腺皮质激素应用

D.抗休克

E.尽快应用升压药物