关于非洲河流的叙述,正确的是______。
A.尼罗河是世界上流程最长的河流B.尼罗河是非洲水能资源最丰富的河流C.赞比西河注入大西洋D.刚果河注入印度洋
参考答案:A
The man didn't know ________ the thief broke into the house and stole all his valuable things. [ ]
A. it was when that
B. when it was that
C. that it was when
D. was it when that
鉴别颈内动脉系统和椎-基底动脉系统短暂性脑缺血发作(TIA)有意义的症状是()
A.感觉障碍
B.运动障碍
C.跌倒发作
D.视觉障碍
E.痫性发作