常染色体
参考答案：
除性染色体外的所有染色体。二倍体细胞拥有两套常染色体。
You ________ sleeping on the train. You were very loud![ ]
A. are
B. were
C. was
午后、黄昏咳嗽加重，咳声轻微短促者，多属（）
A.风寒袭肺
B.肝火犯肺
C.肺燥阴虚
D.风热犯肺
E.湿邪侵肺
