275. A telephone is an instrument by which we can speak to people far away. The underlined word means ____.

276. We should take good care of our ____. Don’t forget to rinse your mouth after meals.

277. If you want to get there quickly, you'd better take the track in the forest. The underlined word means ____.

278. The road constant improvements can’t keep pace with the increasing ____ .

279. The Palace Museum has many art treasures. In this sentence, "treasure" means ____.

280. Take on a(n)__________ with you. It looks like raining.

281. Many hands make light work.__________  is strength.

282. Our earth, one planet of the solar system, is only a very small part of the__________.

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.

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.