霍奇金病临床最常见的首发症状为（）
A.颈部淋巴结肿大
B.持续性发热
C.肝脾大
D.皮肤瘙痒
E.出血
参考答案：A
A harmonious society is like a symphony orchestra-each person contributes a small sound, but
when ________ with other sounds, it becomes beautiful music.[ ]
A. combining
B. being combined
C. combined
D. to be combined
某砂土试样进行室内三轴剪试验，围压为150kPa，破坏时的垂直压力为350kPa，同时测得孔隙水压力为50kPa，该砂土的有效内摩擦角为（）。
A.23.6°
B.30°
C.43.6°
D.48°
