--Jack had prepared for the game for such a long time. We all thought he ________ it.

-- What a pity! He ________ too nervous when playing it.

A．would have won；had been

B．could have won；must be

C．could have won；was

D．would have won；has been

女性，40岁，头痛2个月，加重3天。CT提示右额叶占位。手术切除病灶后送检。

有关该肿瘤的叙述不正确的是（）

A.好发于额叶、颞叶白质等处，小脑、脊髓罕见

B.属高度恶性肿瘤

C.大体常呈多彩状

D.PTAH染色常阴性，免疫组化检查GFAP均呈阳性

E.病变发展迅速，患者多在2年内死亡