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He is older than me.
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I was about to start when it suddenly began to rain.
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A; I see. What is that ratio exactly?
B: it¡¯s approximately 3.14, but the number continues forever. What¡¯s the diameter of your circle?
A: it¡¯s 10 centimeters, so the circumference should be 31.4 centimeters.
Teaching Procedures:
a) Organizing the class
T: Ask the students to get ready for the class.
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