当前在数据库管理系统的研究方面,较活跃的是 ( )
A.关系数据库
B.网状数据库
C.空间数据库
D.层次数据库
参考答案:C
根据句意及首字母提示填词。
1. — What time do you get up in the morning?
— I get up at a q____ past six.
2. My father is a d____, he works in a hospital.
3. — Who are the old man and the old woman in the photo?
— They are my g____.
4. — Does your brother have a r____ face?
— Yes, and he has small eyes.
5. Please look a____ your sister at home.
属于布卢姆认知领域中行为目标分类的是()
A.记忆
B.领会
C.联想
D.迁移