It is believed ______ children should learn to be responsible from the very beginning．
| A．why | B．how |
| C．when | D．that |
285. In the hotel semi-skilled workers include chambermaids (客房女服务员) and______ or waitress, who must have training for their particular duties.
| A．assistants | B．waiters | C．guards | D．Cooks |
284. The officers led their men to _______ in battle, so all the villagers came out to award them with food and drink on both sides of the road.
| A．victory | B．a triumph | C．failure | D．Defeat |
283. The house was sold for 60,000 dollars, which was far more than its real _______ .
| A．cost | B．value | C．price | D．Worth |
282. Our earth, one planet of the solar system, is only a very small part of the__________.
| A．universal | B．university | C．universe | D．Union |
281. Many hands make light work.__________ is strength.
| A．Union | B．Nation | C．Uniform | D．Unifying |