能引起颅内钙化的疾病有（）
A.Fahr病
B.甲旁减
C.脑囊虫病
D.结核球
E.AVM
参考答案：A, B, C, D, E
看图完成对话。
This is Brad's room.
A.—___________?
—It's on the chair.
B.—Where are the pictures?
—___________.
C.—___________?
—One is ___________ the bed, and the other is ___________.
D.—Where is his ruler?
把线段的一端无限延长，就变成______．
