题目内容

参与者必须是人。

A. 对
B. 错

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用例可以不与任何参与者发生联系

A. 对
B. 错

用例图里的关联关系必须有方向。

A. 对
B. 错

Which of the following is NOT true according to the video?

A. Children are often exposed to junk food ads while wathing TV.
B. With the help of teachers, children are able to resist the marketing ads.
Companies are trying to do a great job selling their products.
D. Companies are trying to make their ads entertaining and memorable.

Companies are mentioned as supporting popular junk food products in many ways EXCEPT_________.

A. having their own websites
B. having apps and social media
C. having their own bookstores
D. having interactive games

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