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11. Do you agree or disagree with the following statement: Universities should require every graduation student to take public speaking courses. Give specific examples and details to support your answer.练习人数： 737
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12.练习人数： 575
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13.练习人数： 0
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14.练习人数： 175
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15.练习人数： 139
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16.练习人数： 271
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17.练习人数： 88
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18.练习人数： 176
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19.练习人数： 74
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20.练习人数： 23
