题目内容

朋友帮了他很多忙，他欠他们的情。(have a debt)

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我明白了一个道理:永远不要让你的朋友失望。(let... down)

用自然语言描述：求任意圆的面积和周长。

Use the following words to fill in the blanks.mathematics engineering engineer physics disciplines1 Daniel wants to be a(n) _____________________ .2 _ investigates how mass and movement interact.3 _ classes are for students who want to build structures.4 _ includes studying addition and division.5 This university offers degrees in many different _____________________ .

Read and find the following phrases equivalent to those given in Chinese in the table below.