对青霉素过敏的病人，其发生过敏反应的机理是由于青霉素进入人体，刺激机体产生哪些抗体，使再次接触青霉素后发生过敏反应。()
A、IgAB
暂无解析
Theirplanearrived________SanFranciscothismorning.
WhichofthefolloingisNOTincludedinthefabledFiveMountainsinChina?
Wearelookingforwardto___yourL/CforOrderNo123.()
翻译：Wewouldliketoinformyouthatatpresentwecansupplyyouwithvariouskindsofmen'sleathershoes.
Asitinvolvesonlyasmall___,wehopeyouwillhavenodifficultyonpromotion.()
