二.词汇与语法知识。(每小题1分,共15 分)Great changes_______ in the rural areas in the last two decades.
282. Our earth, one planet of the solar system, is only a very small part of the__________.
281. Many hands make light work.__________ is strength.
280. Take on a(n)__________ with you. It looks like raining.
279. The Palace Museum has many art treasures. In this sentence, "treasure" means ____.
278. The road constant improvements can’t keep pace with the increasing ____ .