系统性红斑狼疮，狼疮肾炎（病理为Ⅳ型）首选的免疫抑制剂为（）
A.环磷酰胺
B.甲氨蝶呤
C.长春新碱
D.依木兰
E.雷公藤
参考答案：A
There are many shops on _____ side of the street. We can buy everything we want. [ ]
A. both
B. all
C. either
D. every
