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. While it may seem obvious that 5a would be greater than a/5, consider the case when a<0. For example 5(-5)=-25 while=-1. Thus when a>0, 5a is greater than a/5. However, when a<0, 5a is less than a/5. Therefore, you cannot determine the relationship between Quantity A and Quantity B based on the given information.
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