—Come in Peter, I want to show something to you.

—Oh, how nice of you! I______ you ______to bring me a gift.

A．never think; are going

B．never thought; were going

C．don’t think; were going

D．hadn’t thought; were going

八岁男孩，以头痛为首发症状，伴有呕吐、头晕及强迫头位。进而出现平衡障碍、步态不稳和共济失调等症状。

患者进一步行MRI检查，并行手术治疗，术后病理提示为室管膜瘤。关于该病不正确的是()

A．室管膜瘤起源于室管膜

B．位于第四脑室内肿瘤因易阻塞脑脊液循环，产生颅内高压症状较早

C．肿瘤增大累及小脑蚓部或半球时，可出现平衡障碍、步态不稳和共济失调等症状

D．当肿瘤压迫脑干或脑神经时，可出现相应的脑神经障碍

E．不会出现肿瘤细胞种植转移