原发性痛经一般不会出现的症状是()
A.下腹部阵发性痉挛性疼痛
B.头晕、乏力
C.面色苍白、冷汗
D.腰骶部疼痛
E. * * 分泌物增多
参考答案:E
The cook turned pale, and asked the housemaid to shut the door, who asked Brittles, who asked the tinker, who pretended not to hear.
下列哪些部分是反射弧中含有的成分()
A.感受器
B.效应器
C.突触
D.传入神经