导航:题目详情 | 答案解析 | 相关问题 | 最新问题 A.purifyB.cleanC.dirtyD.contaminate 学历类 2020-02-22 23:55:03 职业资格 已帮助 人 A.purifyB.cleanC.dirtyD.contaminate 热搜:a是b的充分条件,b是a的必要条件吗 答案解析 难度★★☆ 搜索 正确答案:D解析:本题测试词义搭配。purify意为“净化,使纯净”;clean意为“清扫,使干净”;dirty意为“弄脏,变脏”,指使……不干净;contaminate意为“污染,弄脏”,指通过接触或混合使……不纯净或不洁净。句子的主语是chemical fertilizers and pesticides,所填之词的宾语是water supplies,所以应该选D。 相关问题 1、The Great Hall is bright and spacious.A.pleasantB.cleanC.peacefulD.large 2017-06-29 2、Last Sunday Jane had the windows _________.A. cleaningB. to cleanC. cleaned 2017-12-28 3、During the SARS period it is especially important to ventilate the room.A.dustB.cleanC.re 2019-11-02 4、A.freshB.costlyC.dirtyD.attractive 2019-11-17 5、【12】A.clearB.cleanC.clearlyD.cleaning 2019-11-24 6、You must 【shine 】your shoes.A.lighten B.cleanC.wa 2020-04-28