【判断题】The Spring Festival usually starts on the first day of Chinese solar calendar and lasts for almost half a month, which is from the first day to the 15th day of the first month.
【判断题】During the first half of the 19th century, the first heroic inventor was John Hall who invented the cotton gin in 1794, which was a machine designed to remove the seeds from cotton and it made the cot...
【单选题】As Philadelphia grew from a small town into a city in the first half of the eighteenth century, it became an increasingly important marketing center for a vast agricultural hinterland. Market days【1】t...