题目

完形填空 先通读下面短文，掌握其大意，然后在每小题的A、B、C、D四个选项中选出最佳选项，并将答案写到答题纸上。    Different countries have different food. If you go to  1  ,you may find   2  fish and chip shops along the   3  . Fish and chips are the    4   popular take-away food in England. People often   5  this kind of food at shops,   6   sometimes they put the food   7  paper bags and take it   8   or to their workplace. Chinese take-away food is also   9    in England, Australia and the USA, but the most p如图是用滑轮组提起重物的装置示意图. 物体A重6×104牛, 滑轮组机械效率是80％, 拉力F的功率是2.5千瓦. 要把重物匀速竖直提升1米, 则需_______________秒时间. 所用拉力F＝________________牛.