Keep your mouth healthy! When you brush your teeth, do a good job.
Questions 26 to 28 are based on the passage you have just heard.
26. What does tooth contain according to the passage?
【解析】选。根据文中的Your teeth are a living part of your body. They have nerves and blood vessels可知,牙齿存在神经和血管,由此可知选项正确。
27. What does the bacteria in plaque live on?
【解析】选。文中提到The bacteria in plaque live on sugar,由此可知,牙菌斑里的细菌依靠糖分生存,因此选项正确。
28. What is the most appropriate title for this article?
【解析】选。本文通过介绍牙齿的构成部分以及牙菌斑引发的蛀牙和牙龈疾病,指出保持牙齿健康的必要性,因此适合本文的标题应为:蛀牙和牙龈疾病,项正确。
Passage Two
Good morning. First Id like to welcome all of you to this workshop on student housing. Ill go through the information about types of housing available for the fall and later hand out application forms. Then, if you have any questions, feel free to ask me.
There are three main types of housing here for you to choose from: the dorms, the family student apartments, and the international houses. As of now, there is some space available in each type, but they are filling up fast. You should get your application in as soon as possible. Let me explain some of the main features for each type of housing.
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