If there were no examinations, we should have＿＿＿＿＿at school．

A．the happiest time

B．a more happier time

C．much happiest time

D．a much happier time

细胞核圆形，居胞体中央，染色质呈打碎墨块样，核仁消失，胞质呈嗜多色性，该特征符合（）.

A.早幼红细胞

B.中幼红细胞

C.晚幼红细胞

D.网织红细胞

E.淋巴细胞