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题型:语法填空(单句) 题类:模拟题 难易度:困难

北京市延庆区2020届高三英语模拟试卷

语法填空

    Your teeth may be part of your smile,  they have a more important job­they are the first step in the process of digestion. You have three (kind) of teeth. In the very front of your mouth are eight flat, thin teeth called incisors. They are used for cutting and biting food. Next to these are pointed teeth called canines,  also help you tear food. The remaining teeth are molars. These teeth have flat tops for crushing and grinding the food.

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