【单选题】I have only _____ uncle. His birthday is May _____ . [ ]
【单选题】The first three rows of the hall are ______ for special guests.
【单选题】Sunday is _____ day of the week. [ ]
【简答题】The First of May is a Bank Holiday—the first public holiday of the year in England. Most people consider it a special day, the beginning of summer, a day when the light lasts long into the evening, an...
【单选题】抽样调查与其他非全面调查比较,具有以下哪些特点