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17 Hillary Clinton believed that if she were elected president of the United States, she would be the best.
A Right B Wrong C Not mentioned

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38 WhatdoesAkinsdo？
ASheisanaccountant.
BSheisasoldier.
CSheisasaleswoman.
DSheisaroadsweeper.

15 The industrial revolution modified the whole structure of English society.
A destroyed B broke
C smashed D changed

18 The American people are now ready to accept a woman as their president
A Right B Wrong C Not mentioned

设？i表示各类货物运量在总运量中的比例，Li表示各类货物平均运程，Ci表示各类货物在各平均运程区段每吨运费，表示货物平均运价率，则粗略计算货物平均运价率的公式为（）。