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B
解析 The correct answer is B. To solve this problem, find the angle measure of a sector of a circle that encompasses 20% of the circle. Because there are 360° in a whole circle, a sector that is 20% of the circle would have an angle measure of 20% of 360°, or(0.20)(360°), which is 72°. Thus Quantity B(75°)is greater than Quantity A(72°).
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