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【单选题】
有两个实体集，并且它们之间存在着一个M：N联系，利用概念E-R模型转换成关系数据库的规则，这个E-R结构转换成表的个数为______。A.
1
B.
2
C.
3
D.
4
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反馈参考答案：
举一反三
【单选题】-Excuse me ,could you apeak a little more ? -Sorry,I thought you could follow me.
A.
sadly
B.
quickly
C.
politely
D.
slowly
【单选题】— Excuse me,could you tell me ? — At two o'clock tomorrow afternoon. [ ]
A.
when we will have a class meeting
B.
when will we have a class meeting
C.
where we will have a class meeting
D.
where will we have a class meeting
【单选题】— Excuse me, could you tell me where I could make a call? — Sorry, I’m a stranger here. — ____.
A.
Thanks a lot
B.
That’s a pity
C.
Thanks anyway
D.
I’m sorry to hear that
【单选题】欧洲大陆历史上第一部成文宪法是?
A.
1789 年法国的《人权宣言》
B.
1689 年英国的《权利法案》
C.
1919 年的德国的《魏玛宪法》
D.
1791 年的法国
【单选题】Excuse me, could you give me a hand?
A.
Oh, no!
B.
Sure, my pleasure!
C.
I'd love to.
D.
I needn't.
【单选题】Excuse me! Could you give me a hand?
A.
Sure, my pleasure!
B.
Oh, no!
C.
I have only two.
D.
Thanks.
【多选题】根据电子合同的特征,电子合同对下列哪些事件约定可构成免责事由( )?
A.
文件感染了病毒
B.
文件丢失
C.
非因自己原因的网络中断
D.
非因自己原因引起的电子错误
【单选题】Speaker A: Excuse me. Could you show me the way to the nearest subway station? Speaker B: ______.
A.
Any time. It's next to the post office.
B.
All fight. Do you want me to go with you?
C.
No problem. With pleasure.
D.
Of course not. Go down this street and turn fight.
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