第11题: [单项选择]石油的比重一般() A. =1 B. <1 C. >1 D. 有时大于l,有时小于 参考答案:B
第12题: [单项选择]The author has noticed how to regard a place in terms of ______ A. many intellectual and educational opportunities B. the quality and variety of its service C. investment in educational institutions D. knowledge production and consumption 参考答案:D 答案解析:[解析]事实细节题。文章首段指出"each region can be analyzed with respect to the quality and diversity of its knowle
第15题: [单项选择]患者女,正处于哺乳期,主诉发现右乳房肿块,2天后很快扩展到全乳房。查体:体温37℃,右乳较对侧明显增大,表面发红,扪之整个乳房发硬,边界不清,皮肤有水肿,触之明显压痛,但未触及局限性肿物及波动感,右侧淋巴结肿大。首先考虑的诊断是() A. 急性乳腺炎 B. 乳汁淤积 C. 乳房后脓肿 D. 炎性乳癌 E. 乳房囊性增生病并感染 参考答案:A 答案解析:急性乳腺炎是乳腺的急性化脓性感染,患者多是产后哺乳的妇女,尤其是初产妇。故答案应选A。