正方体各面所在的平面将空间分成_____________部分.
27
可以想象切一块正方体形的豆腐，要求用6刀切出中间一个小正方体.所以共切成27块.
阅读短文，根据短文内容判断正误，正确的写"T"，错误的写"F"。
Yesterday was Sunday. Jack and Susan went to Tian'anmen Square. It was cold and windy. They
played with their friends from nine to eleven in the morning. Then they went home by taxi. Today Susan
feels very bad. She has a cold. But Jack is very well.He'll buy some medicine(药)for Susan.
( ) 1. Yesterday was warm and sunny.
( ) 2. Jack and Susan took a taxi to go home yesterday.
( ) 3. Susan is ill today.
( ) 4. Jack had some medicine yesterday.
以下关于介入放射学的分类，正确的是（）
A.西医，中医
B.口腔，妇科
C.内科，外科
D.血管，非血管
E.传统，现代
