扩张型心肌病最常累及：（）.
A．左心室
B．左心房
C．右心室
D．右心房
E．房室瓣瓣环
参考答案：A
Oracle OLAP是Oracle数据库系统的 【16】 解决方案。
—The Summer Palace is wonderful. Have you ever visited any other interesting places?
—Yes. Also, we _______ to the Great Wall. [ ]
A. have gone
B. have been
C. had gone
D. had been
