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The distribution of students' grades in A and B is shown in the following table. Is the average grade of class A higher than that of class B?
1: x= 3, y=4
2: The three students with the lowest scores in class A all scored 0. The two students with the lowest scores in class B all scored 0.
  • AStatement (1) ALONE is sufficient, but statement (2) alone is not sufficient.
  • BStatement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
  • CBoth statements TOGETHER are sufficient, but NEITHER one ALONE is sufficient.
  • DEACH statement ALONE is sufficient.
  • EStatements (1) and (2) TOGETHER are NOT sufficient.
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正确答案: E

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