Which of the following is not a feature of a good opening? A: The presenter gives a structure of his/ her presentation. B: The presenter introduces himself/herself. C: The presenter introduces the topic. D: The presenter thanks the audience for their patience.

MVP架构模型正确的是（）。 A: 当View需要更新数据时，首先去找Model，然后Presenter去找Model请求数据，Model获取到数据之后通知Presenter，Presenter再通知Model更新数据 B: 当View需要更新数据时，首先去找Presenter，然后Presenter去找Model请求数据，Model获取到数据之后通知Presenter，Model再通知View更新数据 C: 当View需要更新数据时，首先去找Presenter，然后Presenter去找Model请求数据，Model获取到数据之后通知Presenter，Presenter再通知View更新数据 D: 当View需要更新数据时，首先去找Presenter，然后Presenter去找Model请求数据，Presenter获取到数据之后通知model，Presenter再通知View更新数据

It is helpful for the presenter to ______________ while making a conclusion.

The presenter should have a clear goal.

For planning ahead, the presenter gives an example of ______.

As visitors come into the room, the presenter should __________.

If the presenter just reads off his poster, __________.

The presenter is supposed to deliver the presentation as soon as possible.

The presenter says that you can find real bargains ________.

When the presenter answers a question, he had better not __________.