题目内容

39 Thrift shops can do everything EXCEPT
A give clothing a second life.
B generate in come for charities.
C provide cheaper clothes for the poor.
D stop rich people from wasting money

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58 A put B keep C remove D study

I don’t think he could have done such a stupid thing last night, ________？
[A] do I
[B] could he
[C] has he
[D] did he

● 假设有学生 S（学号，姓名，性别，入学时间，联系方式），院系 D（院系号，院系名称，电话号码，负责人）和课程 C（课程号，课程名）三个实体，若一名学生属于一个院系，一个院系有多名学生；一名学生可以选择多门课程，一门课程可被多名学生选择，则图中（a）和（b）分别为（51）联系。假设一对多联系不转换为一个独立的关系模式，那么生成的关系模式（52）。

3 Practically all animals communicate either through sounds or through soundless codes.
A Certainly
B Probably
C Almost
D Absolutely