变态反应的本质是（）
A.特殊免疫应答
B.异常免疫应答
C.正常免疫应答
D.非特异免疫应答
E.回忆应答
参考答案：B
—How far is it from your home to school?
─It’s fifteen ______ walk.
A．minute
B．minute’s
C．minutes
D．minutes’
超量恢复
