[单选题]病人,女性,40岁。反复不规则发热半年,体温38℃~39℃.查体:可见下肢两处皮肤有压痛性瘀斑,BP 130/70mmHg,HR 75次/min,心脏超声提示有赘生物形成,二尖瓣中度反流,入院后两次血培养结果均为金黄色葡萄球菌(+)。护士嘱该病人绝对卧床休息,最主要的原因是 A. 防止活动中受伤,导致出血 B. 有利于心功能恢复 C. 有利于减轻疼痛 D. 有利于保持体力 E. 防止心脏赘生物脱落造成栓塞
A. only boys are allowed to use the computers B. only girls are allowed to use the computers C. no computers in the classroom D. both boys and girls are allowed to use the computers 参考答案:D 答案解析:从全文第一句可以得出答案。
第24题: [单项选择]In families that did not indulge themselves in this way a healthier climate ______; children do not seem to have been unduly obsessed with death. A. permeated B. persisted C. prevailed D. presumed 参考答案:B 答案解析:permeate是个及物动词,需要带宾语,意思是“渗透,充斥”,prevail是不及物动词,意思是“占主导地位”,其后往往接介词over,presume是个及物动词,其后往往接that从句,表示“假定