引起过敏性紫癜的病因有
A．上呼吸道感染
B．鱼、虾、蟹等过敏
C．抗生素、阿托品等药物
D．寒冷刺激
E．昆虫咬伤
参考答案：A,B,C,D,E
Eliza remembers everything exactly as if it _________ yesterday.
A．was happening
B．happens
C．has happened
D．happened
斜巷施工开工前要与（）工联系好，关闭车场（）和（）后方可进入现场。
