第7题: [单项选择]①退耕还草②沙漠化严重③垦荒屯围④沙尘暴突起⑤粮食匮乏 A. ⑤-①-③-②-④ B. ⑤-③-②-④-① C. ⑤-②-③-①-④ D. ①-③-④-②-⑤ 参考答案:C 答案解析:[答案]C。解析:题干描述的是火药的发明、发展的过程。火药的性质最早是在道士炼丹时发现的,②应排在最前,经过后人的反复试验发明了真正意义上的火药,⑤应排在②后。中国人发明火药最早是用在庆典上做烟花爆竹
第30题: [单项选择]If he refuses to ______ my plan, I can probably find someone more cooperative. A. put up with B. fall in with C. do away with D. get along with 参考答案:B 答案解析:本题考查动词短语辨析。fall in with“偶遇,同意”;put up with“忍受,容忍”;do away with“废除,弄死”;get along with“相处,进展”。句意为:如果他不