关于脑转移瘤行X(γ)刀治疗叙述正确的是()
A.直径<3~5cm
B.直径>5cm
C.数量<3~5个
D.需与全脑放疗相结合
E.以上均不是
参考答案:A, C, D
The teacher asked me if _____ finished my homework. [ ]
A. I have
B. have I
C. I had
D. had I
世界第一条主要进行互联网信息传输服务的海底通信电缆是哪年开通的?