单选题 The river is already _____ its banks because of excessive rainfall; and the city is threatened with a likely flood.无

【正确答案】 D

【答案解析】句意：由于大量降水，河水已经涨得与河床齐平了，城市随时可能遭到洪水的侵扰。 parallel to平行；与……平等。 level in同等；获同样成功。 flat平坦的；一般不与on连用。 flush with与……齐平；同高。故选D。