哪一项不是髓母细胞瘤的CT表现（）。
A.造成梗阻性脑积水
B.肿瘤明显强化
C.可以见到瘤周水肿
D.脂肪密度
E.发生于小脑蚓部
参考答案：D
开发策略的制定必须考虑很多问题，但下面( )的问题可以不考虑。
A．企业必须建立信息系统总体规划
B．必须拒绝高层管理人员的指挥
C．建立畅通的信息通道
D．加强数据处理部门与管理部门之间的联系
句型转换。
1. What other things did you do on your day off? (变为同义句)
_____ _____ did you do on your day off?
2. Our class had a great time on the school trip. (变为同义句)
Our class _____ _____ on the school trip.
3. Our school trip was very interesting. (对画线部分提问)
_____ _____ your school trip?
4. There was only one sandwich. (对画线部分提问)
_____ _____ _____ _____ there?
5. He met Tina on his way home. (变为否定句)
He _____ _____ Tina on his way home.
