缺乏细胞壁的原核细胞型微生物是
A．螺旋体
B．衣原体
C．立克次体
D．病毒
E．支原体
参考答案：E
Shelly had prepared carefully for her biology examination so that she could be sure of passing it on her first _____ .[ ]
A. intention
B. attempt
C. purpose
D. desire
以上哪项不是瘿病的病因病机？（）
A.肝郁气滞
B.气虚血瘀
C.寒湿凝滞
D.冲任失调
E.痰火郁结
