TAILIEUCHUNG - how to master skills for the toefl ibt listening advanced part 3

You will have 30 minutes to write a three- to five-paragraph essay on that topic. You must write on the topic you are assigned. An essay on any topic other than the one assigned will receive a score | Listen to part of a lecture in a public health class. lEJ 1. What is the lecture mainly about How to diagnose a case of gingivitis A good technique to brush one s teeth f The cause of oral plaque and how to prevent it How to schedule visits to the dentist 2. What is one way that oral plaque can affect teeth It hardens and becomes tartar. It makes teeth healthy. It can cause teeth to fall out instantly. It causes oral cancer of the tongue. 3. How does the professor organize this lecture As an informal question and answer session Chronologically based on the history of dentistry Ho bogins with a guest speaker and then prompts the students to ask questions. He tells the story of a person who does not take care of his teeth. imperative al necessary diligent al persistent not giving up incorporate Iv to take in or include as part or parts rigorous al very exact ingest vl to take food into the body via the mouth failure nl not having achieved the desired end defense nJ a method of protecting something swollen a expanded due to internal pressure neutralize Ivl to counterbalance penetrate lv to enter into something 28 Unit 1 Listening for Main Ideas 4. Listen to the lecture and fill in the blanks to complete the lecture notes. 1 Professor mentions A Con bu ld up on teeth because of S Is yellowish stfcky. nim of_ C Can cause or __ 2 Plaque can harden into tartar A A hard Irritates gums so that hey ore_ and C Can cause Describes dental care A Brush _ B Visit the dentist often helps prevent plaque 5. Complete the following summary with the words given below. Oral plaque is a n _ that forms naturally on our teeth. However if not property removed oral plaque can form into a w_known as tartar. In turn If tartar is not properly treated then it can lead to much more serious diseases like or periodontis. The body does its best to combat the build-up of oral plaque into .

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