长期卧床患者的并发症包括下列哪项()
A.呼吸系统感染、肌力减退
B.骨质疏松、关节僵硬
C.体位性低血压、下肢血栓性静脉炎
D.压疮
E.早老性痴呆
参考答案:A, B, C, D
Mr. Zhang teaches ________ Chinese. We like ________ class very much.[ ]
A. my, her
B. me, his
C. our, his
D. us, his
地主封建的政治制度赖以建立的经济基础,是按宗法分封而获得土地的贵族组织的以氏族为单位的集体生产。