题目内容：
阅读下列短文，回答题。 Building confidence ( 信心)
Faith in yourself, your topic and your healthy mind is a must if you are to be a better publicspeaker． Many speakers are not prepared and lose confidence because of that． But others lack confidencebecause they are afraid of being judged--and possibly made fun of--just like they were in high schoolspeech class． Build your confidence by using all your tools and knowing that you are excellent．
Knowing what's up
You have to know your topic inside and out． Nothing kills your speech like "um" and "uh" in every
sentence． Research your subject to the point where you are an expert． And that's half the battle．
Practicing
Researching and knowing your topic is one thing, but actually delivering that information isanother． Practicing your speech in advance is a must． You will find your beats and your direction,through hours in front of the mirror practicing． So when you climb up on stage, it will be like riding ahike,unless you don't know how to ride a bike．
Dressing properly
You will want to dress properly for the occasion(场合)--which could be a suit or simply ajacket． Make sure it also has the comfort you need． If the clothes are not comfortable, you may notpay full attention to your speech．
Making connections
Make a personal connection with someone in the audience (听众)． It might be someone youknow that you can call out to, or someone in the front row you can speak directly to． Maybe yourspeech leads you to ask them a question, which is an easy way for you to take yourself from the stageand place yourself as one of your audience． It also takes the pressure off．
What does "that' s half the battle" mean in the text? A．You have already won the battle．
B．You are getting on the way to final success．
C．You need experts to guide you in public speaking．
D．You should write sentences without "um" and "uh"．
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