下列商品中,()不适合开展期货交易
A.西瓜
B.白银
C.电脑芯片
D.活牛
参考答案:A, C
男性,40岁,多年胃、十二指肠溃疡病,近半月来胃病发作,饮食后突然全腹疼痛剧烈,呈刀割样,血压100/70mmHg(13.3/9.3kPa)脉搏100次/min,全腹压痛,反跳痛,肌紧张
确诊后处理原则是()。
A.抗生素治疗
B.输液治疗
C.止痛治疗
D.手术治疗
E.针灸治疗
My mother didn't ____ us leaving Kunming at once, so we had to stay there for ____ two days. [ ]
A. approve; other
B. approve of; more
C. approve of; another
D. approve; another