瑞典的国花有()
A.白菊
B.睡莲
C.孪生花
D.葵花
E.白玫瑰
参考答案:A, B, C
Tom went to open the door. ______, his father began to wash dishes. [ ]
A. However
B. Nevertheless
C. Besides
D. Meanwhile
计算机信息系统的基础是()。
A、信息输入
B、数据采集
C、数据处理
D、信息使用