椎-基底动脉供血不足的临床表现有()
A.视力障碍
B.枕后痛
C.剧烈眩晕
D.呕吐
E.偏瘫
参考答案:A, B, C, D
Would you like to know __________ year?[ ]
A. your
B. you
C. yours
按合理膳食要求,每日三餐摄入各类食物的大致比例为[ ]