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【判断题】
此二月兰花冠类型为十字形花冠、离瓣花。
A.
正确
B.
错误
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【单选题】下面列出的数据模型中，哪一种是数据库系统中最早出现的数据模型?
A.
关系模型
B.
层次模型
C.
网状模型
D.
面向对象模型
查看完整题目与答案
【简答题】Dear Peter, I hope everything is going well with you ! I’m glad __41__ your letter asking for my __42__ on how to learn Chinese well. Here are__43__suggestions. Firstly, you can take part__44__a Chine...
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【简答题】Dear Peter, I’m very glad to receive your e-mail asking for information about the host family we have arranged﹀you to stay with． Locating in a beautiful and quiet neighborhood, the house was big enoug...
查看完整题目与答案
【单选题】数据库系统中,最早出现的数据模型是( )。
A.
语义网络
B.
层次模型
C.
网状模型
D.
关系模型
查看完整题目与答案
【单选题】在数据库系统中,最早出现的数据模型是( )。
A.
网络模型
B.
层次模型
C.
网状模型
D.
关系模型
查看完整题目与答案
【单选题】听力原文：W: Hi, Peter. M: Hi, Mary. I'm glad to meet you here. Q: What is the relationship between the speakers? (19)
A.
They are friends.
B.
They are strangers.
C.
They are brother and sister.
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【单选题】m glad that Peter decided to come to the party because we _________ him for several years.
A.
haven't seen
B.
don't see
C.
hadn't seen
D.
didn't see
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【判断题】世界上翼展最长的飞机是H4赫拉克勒斯,绰号“云杉鹅”。
A.
正确
B.
错误
查看完整题目与答案
【单选题】Peter was very glad to know that his creditor generously agreed to ______ all of his debts.
A.
take away
B.
cut out
C.
clear up
D.
write off
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【判断题】世界上翼展最长的飞机是H4赫拉克勒斯,绰号“云杉鹅”。A. √B. ×
A.
正确
B.
错误
查看完整题目与答案
相关题目：
【单选题】下面列出的数据模型中，哪一种是数据库系统中最早出现的数据模型?
A.
关系模型
B.
层次模型
C.
网状模型
D.
面向对象模型
查看完整题目与答案
【简答题】Dear Peter, I hope everything is going well with you ! I’m glad __41__ your letter asking for my __42__ on how to learn Chinese well. Here are__43__suggestions. Firstly, you can take part__44__a Chine...
查看完整题目与答案
【简答题】Dear Peter, I’m very glad to receive your e-mail asking for information about the host family we have arranged﹀you to stay with． Locating in a beautiful and quiet neighborhood, the house was big enoug...
查看完整题目与答案
【单选题】数据库系统中,最早出现的数据模型是( )。
A.
语义网络
B.
层次模型
C.
网状模型
D.
关系模型
查看完整题目与答案
【单选题】在数据库系统中,最早出现的数据模型是( )。
A.
网络模型
B.
层次模型
C.
网状模型
D.
关系模型
查看完整题目与答案
【单选题】听力原文：W: Hi, Peter. M: Hi, Mary. I'm glad to meet you here. Q: What is the relationship between the speakers? (19)
A.
They are friends.
B.
They are strangers.
C.
They are brother and sister.
查看完整题目与答案
【单选题】m glad that Peter decided to come to the party because we _________ him for several years.
A.
haven't seen
B.
don't see
C.
hadn't seen
D.
didn't see
查看完整题目与答案
【判断题】世界上翼展最长的飞机是H4赫拉克勒斯,绰号“云杉鹅”。
A.
正确
B.
错误
查看完整题目与答案
【单选题】Peter was very glad to know that his creditor generously agreed to ______ all of his debts.
A.
take away
B.
cut out
C.
clear up
D.
write off
查看完整题目与答案
【判断题】世界上翼展最长的飞机是H4赫拉克勒斯,绰号“云杉鹅”。A. √B. ×
A.
正确
B.
错误
查看完整题目与答案