Wednesday 20 May 2020

F1 math (21/5/2020) C4 Ratios, Rates and Proportions - Exercise 1

授课内容：< Ratios, Rates and Proportions - Exercise 1 >

请大家把题目和答案都抄在纸上。

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答案下个星期公布！！
大家要记得做哦!

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答案:
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