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【单选题】
要保证数据库的逻辑独立性,需要修改的是()A.
模式与外模式的映射
B.
模式与内模式的映射
C.
模式
D.
三层模式
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举一反三
【单选题】—Why did you let ____ kids off this time? —I just want to give them ____ second chance．
A.
/; the
B.
the;/
C.
the; the
D.
the; a
【简答题】Why did you let the fish go? Because he _____ _____ _____ so.
【单选题】听力原文：M: Well, what did you think of the movie? W: I don't know why I let you talk me into going. I just don't like violence. Next time you'd better choose a comedy. Q: What can we infer from the conve...
A.
The man.
B.
The woman.
C.
The man's boss.
D.
Himself.
【简答题】He felt ashamed that he had let his wife get him into a fight. (para. 48) Questions: Who did the husband blame for starting the fight? Why did the husband feel “ashamed”? Do you notice the ism of t...
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