Either the ways or the time________ yet,   but you may ask the headmaster for some information. [      ]

A. isn't decided  

B. hasn't decided

C. aren't decided  

D. haven't decided

扁桃体恶性肿瘤常见（）。

A.双扁桃体充血肿大，表面有黄白色分泌物覆盖，下颌角淋巴结肿大

B.小儿双扁桃体Ⅱ度肿大，无不适，双扁桃体光滑，呈淡红色

C.颈部肿大呈“牛颈”状，双扁桃体有灰白色假膜，广泛分布，不易擦去

D.一侧扁桃体迅速增大，伴溃疡，无明显疼痛

E.患者感咽喉部有异物梗阻感，无疼痛及吞咽障碍，查体咽喉部未发现异常