脑栓塞典型的表现()
A.起病急剧,迅速达到高峰
B.初始症状重
C.立即进入昏迷状态
D.局限性神经功能缺失症状
E.有栓子来源的原发疾病
参考答案:A, B, D, E
蚂蚁等昆虫的足是______的,依靠足部______的收缩和舒张,使分节的足产生运动.运动时,一般以一侧的______和另一侧的______为一组,进行交替运动.
______ it is a challenge for me to finish the task in such t'ime, I enjoy it. [ ]
A. Because
B. Though
C. Unless
D. Until