阅读下面这篇短文，短文后列出7个句子，请根据短文的内容对每个句子做出判断。如果该句提供的是正确信息，请在答题卡上把A涂黑;如果该句提供的是错误信息，请在答题卡上把B涂黑;如果该句的信息在文章中没有提及，请在答题卡上把C涂黑。
Look after Your Voice
Often speakers at a meeting experience dry mouths and ask for a glass of water. You can solve the problem by activating the saliva in your mouth. First gently bite the edges of your tongue with your teeth. Or, press your entire tongue to the bottom of your mouth and hold it there until the saliva flow. Or you can imagine that you are slicing a big juicy lemon and sucking the juice.
Before you begin your talk, be kind to your voice. Avoid milk or creamy drinks which coat your throat. Keep your throat wet by drinking a little sweetened warm tea or diluted fruit juice.
If you sense that you are losing your voice, stop talking completely. Save your voice for your speech. You may feel foolish using paper to write notes, but the best thing you can do is to rest your voice. If you need to see a doctor, perhaps you can get some advice from a professional singer. In the meantime, do not even talk in a low voice.
What about drinking alcohol to wet your throat? I advice you not to touch alcohol before speaking. The problem with alcohol is that one drink gives you a little confidence. The second drink gives you even more confidence. Finally you will feel all-powerful and you will feel you can do everything, but in fact your brain and your mouth do not work together properly. Save the alcohol until after you finish speaking.
Perhaps you want to accept the advice, but you may wonder if you can ever change the habits of a lifetime. Of course you can. Goethe, who lived before indoor skating sinks or swimming pools, said, "We learn to skate in the summer and swim in the winter." Take this message to heart and give yourself time to develop your new habits. If you are willing to change, you will soon be able to say that you will never forget these techniques because they became a part of your body.
16 To solve the problem of dry mouths, one is advised to take cool milk.
A Right B Wrong C Not mentioned
17 The first paragraph mentions three ways of activating the saliva in the mouth.
A Right B Wrong C Not mentioned
18 The writer suggests that you go to see a doctor when you feel you are losing your voice.
A Right B Wrong C Not mentioned
19 The writer's advice about alcohol before you make a speech is to take one or two drinks so as to give yourself some confidence.
A Right B Wrong C Not mentioned
20 Due to the effect of alcohol, your thought and your mouth will not coordinate properly.
A Right B Wrong C Not mentioned
21 Goethe often did outdoor skating and swimming.
A Right B Wrong C Not mentioned
22 The writer cites Goethe to prove that one can change one's habits.
A Right B Wrong C Not mentioned
参考答案：
16 B 17 A 18 B 19 B 20 A21 C 22 A
