采暖建筑外窗的层数与下列哪个因素无关（ ）
A．室外温度
B．室内外温度差
C．朝向
D．墙体材料
参考答案：D
Yesterday when I was playing in Century Park, I came across Mr Li, our physics teacher. The underlined
part means ______. [ ]
A. met
B. happened to meet
C. saw
D. talked with
溶组织内阿米巴原虫侵入肝脏最主要的途径是
A．经局部淋巴管B．穿透结肠壁直接入肝C．经门静脉D．经肝静脉E．经胆道系统
