Reading a long passage will replace fast reading in Section B. The length and difficulty of the passage are still the same, but it is followed by 10 statements.

原试卷第二部分的快速阅读理解调整为长篇阅读理解。篇幅长度和难度保持不变。篇章后附有10个句子，每句一题。

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The optimum passage section figure of rectangle is square, and the rectangle has 4 optimum comer circular arcs which make the hydraulic loss of friction loss of per unit length passage the least.

矩形流道断面以正方形为最优，且存在最优角圆，使单位长流道沿程水力损失最小。

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