领导苏联军民浴血奋战，取得了莫斯科保卫战胜利的领导人是[ ]
A、列宁
B、斯大林
C、戈尔巴乔夫
D、马克思
答案：B
How many people were injured or killed in the blasts a. Nobody were killed, four injured. b. Two were killed, five injured. c. Two were killed, seven injured. d. Nobody were killed, seven injured.
下列引起心肌炎最常见的病原体是（）
A.流感病毒
B.腺病毒
C.柯萨奇病毒B组
D.链球菌
E.埃可病毒
