题目

若a+b+c=0且a>b>c,则下列几个数中:①a+b;②ab;③ab2;④ ; ⑤ ,一定是正数的有 (填序号) . 答案:【1】①④⑤完形填空(共20小题,每小题1.5分,满分30分)I live in a big city. It is noisy and dirty and I always feel very______. At the weekends, I like to leave the city and get some ______air and have a good rest. A few weeks ago, I decided_____ to see my_______ .I was really looking forward to ________ them as soon as possible.My parents live a long way away. I went to see them with James, a friend of________. And we drove there_______ Friday night. In the middle of the road it began to rain.The roads became very wet and it was difficult to________. We _____ home just after midnight, feeling very tired. The next morning it was still______. James took his car to a garage(汽车修理厂) ________ was very good.In the afternoon the_______ got better. We wanted to go for a drive. My parents______ us their car.But their car was not very good. It didn’t______on the way.How _______ we were! We had to call up the garage. “Oh”, they said, “your car won’t ______ until tomorrow.” So it wasn’t ______for us to go for drive. We had to stay at my parents’ home all day. On Sunday my mother ______ a heavy box on her foot and we had to hire(雇佣) a taxi _____ her to hospital. When James and I drove back home on Sunday afternoon, we got stuck in a car accident. Oh, my God! Next time if I want a rest, I will stay in the_____.1.A. exhausted B. energetic C. amazed D. happy2.A. cold B. dry C. fresh D. cool3.A. to go B. going C. gone D. to be going4.A. comrades B. friends C. neighbors D. parents5.A. to meet B. met C. meeting D. being met6.A. mine B. I C. my D. me7.A. in B. at C. to D. on8.A. ride B. drive C. walk D. run9.A. arrived at B. arrived C. got to D. arrived in10.A.blowing B. snowing C. raining D. shining11.A. that B. where C. whose D. who12.A. sky B. earth C. water D. weather13.A. lent B. borrowed C. sold D. bought14.A. move B. run C. work D. start15.A. lucky B. amused C. unlucky D. pleased16.A. be repaired B. repaired C. been repairing D. repair17.A. easy B. possible C. necessary D. right18.A. put B. threw C. dropped D. fell19.A. to bring B. to take C. bring D. take20.A. country B. city C. mountain D. village 
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