51、Floppy disk

259、efforts were made是努力

258、demand for翻译是需求

257、according to翻译是根据

256、Hangzhou is () for the West Lake

255、() hurt

254、having seen翻译是()

253、comfortable是()

252、playing ()

251、encourage () to do sth

250、Have you heard of the saying:A bird in the hand is () two in the bush(树丛)