中国历史上的人工运河以南北走向居多,其原因有()。
AB
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Iparticularlywanttopaytribute,notonlytothosewhopreparedthemagnificentdinner,butalsotothosewhohaveprovidedthesplendidmusic.()
Youngerchildrenarecurious________howthingswork,andmanyofthemwanttotakeaparteverythingwithintheirreach.