Those flowers were ___________ for your mother on her seventieth birthday, but as she is away, I would be glad if you accept them.
| A．devoted | B．produced | C．meant | D．supplied |
249. A_____ has taught us what atoms are made up of and how powerful the atom bomb is.
| A．seaman | B．salesman | C．naturalist | D．Scientist |
248. A group of the red scarves are playing on the seaside_______.
| A．sand | B．sands | C．sail | D．Salts |
247. He found it quite impossible to learn _____ well in less than 6 months so he registered for the next semester(term).
| A．Russian | B．Russians | C．Russia | D．Russias |
246. Nelson Mandela played and is still playing a leading ________ in ending apartheid(种族隔离政策) in South Africa.
| A．use | B．roles | C．role | D．Parts |
245. After work, the young man and his colleagues went to the nearest _____ and sat down at the table for a grand dinner.
| A．bar | B．Cafe | C．restaurant | D．dining-room |