（）是外墙的墙角，即建筑物的外墙与室外地面或散水接触部位墙体的加厚部分。
A.勒脚
B.基础墙
C.内墙
D.大放脚
参考答案：A
People often make a mistake about my nationality. I was born of Chinese parents , _____, I look ______ but I was born and grew up in America, so I am an American.
A．however; Chinese
B．therefore; Chinese
C．so; the Chinese
D．therefore; a Chinese
男性，25岁，胸闷、气短12天，伴乏力、低热、盗汗、纳差。查体：一般情况好，浅表淋巴结不大，左侧腋后线第 7肋间以下语颤减低、叩浊、呼吸音减低，腹部正常。其最可能的诊断是
A．胸膜间皮细胞瘤
B．系统性红斑狼疮
C．结核性胸膜炎
D．充血性心力衰竭
E．肝硬化
