心肌灌注显像通常将心肌轴面分为：_______、________、_______影像。
参考答案：短轴断层、水平长轴断层、 垂直长轴断层
Such good use had been his spare time_________ his English has improved a lot． [ ]
A. made of; as
B. made of; that
C. made in; that
D. found in; as
金石学是宋代兴起的以（）和（）为研究对象的一门学问。清末民初时期，金石学的研究对象扩大到其他古物，因此有人就主张将金石学改称为（）。
