单项选择题
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A. if Quantity A is greater; B. if Quantity B is greater; C. if the two quantities are equal; D. if you cannot determine the relationship based on the given information.
单项选择题 s＞1（）
单项选择题 For how many positive integers m≥100 is (m-5)(m-45) positive
单项选择题 On the xy-coordinate plane appear four points-A, B, C and D-which have (x, y) coordinates of (-2, -1), (4, -1), (-2, 3), and (3, 4) respectively.（）
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