【多选题】那两个关于无类路由协议的陈述是正确的?(选择两项)
【多选题】以下关于脊柱生理弯曲的描述有误的是?
C.
自出生起脊柱的 4 个生理弯曲便存在,但可受环境及姿势习惯等后天影响而产生畸形
【判断题】后天形成的脊柱生理弯曲为颈曲和腰曲。( )
【判断题】腰背伤是指脊柱生理弯曲异常,触摸有压痛。
【单选题】听力原文:M: I wish we had taken an umbrella. W: That's my fault. I thought it wouldn't rain today. Q: What happened to the two speakers? (15)
A.
They had lost their way.
B.
They were told it would rain.
C.
They were caught in the rain.
D.
They had taken an umbrella.