2. 外语
  3. Each of Questions 1 to 7 presents two quantities. Quantity A and Quantity B. Compare the two quantities. You may use additional

Each of Questions 1 to 7 presents two quantities. Quantity A and Quantity B. Compare the two quantities. You may use additional

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问题 Each of Questions 1 to 7 presents two quantities. Quantity A and Quantity B. Compare the two quantities. You may use additional information centered above the quantities if such information is given. Choose one of the following answer choices:
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.

选项 A、 
B、 
C、 
D、 
答案D
解析 The correct answer is D. The formula for the area of a circle is πr2, where r is the radius. Because the area is dependent on the square of the radius, it is not apparent what increasing the radius by 1 will do to the area. The original radius is not specified for either quantity, so the increases in areas cannot be calculated; the relationship cannot be determined from the given information.
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