绝经前后诸证的临床表现哪项是错的（）
A.行经周期紊乱
B.烦躁易怒
C.烘热汗出
D.浮肿便溏
E.吐衄周期性发作
参考答案：E
Helen hurt her leg while _____ on the playground. We had to send her to the hospital. [ ]
A. played
B. playing
C. was playing
D. is playing
鱼、蝾螈、龟、鸡、猪、牛、兔7种脊椎动物和人的早期胚胎都有鳃裂和尾，这说明脊椎动物和人都是由古代原始的有鳃有尾的共同原始祖先进化来的。（）
