关于海绵状血管瘤,描述正确的是()
A.多发生于肌锥内
B.多发生于肌锥外
C.钙化多见
D.多呈非均匀增强
E.与视神经分界不清
参考答案:A
Many students ______ changes to show themselves in class because the class size is too big.
A.don't give
B.aren't given
C.haven't given
D.won't give
计算机的内存储器比外存储器
A.便宜
B.存储更多信息
C.存取速度快
D.虽贵,但能存储更多信息