A、By asking his audience a question. B、By smiling to his audience. C、By making fun of himself. D、By grabbing his audience. C

A lot of people around the world may well agree that one reason Barack Obama is President of the US is because he knows how to give a good speech.(l)In 2004, a little-known senator from Illinois gave the keynote speech at the Democratic National Convention. That senator was Obama. It was a remarkable speech—poetic and inspiring. The people who heard it would remember the speech as well as the speaker for a long time. Since 2004, Obama has written and delivered thousands of speeches.(2)These are usually praised for two reasons: he treats the audiences like intelligent adults, and he is able to express complicated ideas in a straight-forward, natural way.
    There are several ways contributing to his becoming a great speechmaker. Obama doesn’t go anywhere without his Teleprompter. The textbook-sized panes of glass holding the President’s prepared remarks follow him wherever he goes to speak. Obama has a team of people who write his speeches. The writers chat with Obama for hours about what he wants to say. They listen to recordings of past presidential addresses and seek advice from advisers. Obama usually edits and rewrites the drafts several times.(3)Obama starts his speech by gently teasing his guests. His opening lines grab the audience’s attention while giving them an opportunity to relax and laugh at themselves and each other. But before you making fun of your listeners, you should begin from making fun of yourself. This is another thing that helps Obama to become a great speaker.