黄疸出血型钩体病最常见的死亡原因是（）
A.肝功能衰竭
B.消化道出血
C.肺大出血
D.急性肾功能不全
E.肝性脑病
参考答案：D
— Why didn't you know it was raining outside?
— Oh, I was _____ in thought at that time. [ ]
A. confident
B. strict
C. interested
D. deep
根的中柱鞘细胞具有凯氏带。
