第20题: [单项选择]It finally ______ me that he had been lying. A. dwelt on B. dawned on C. lingered on D. struck on 参考答案:B 答案解析:[精解] 题型:动词短语。此题考查短语动词。dwell on细想或详述某事,其后接sth.,不能接sb.,即(sb.)dwell on sth.。dawn on逐渐明白,其用法为It dawned o
第21题: [单项选择]血栓性外痔 A. 便血量多而鲜红 B. 便血少而疼痛 C. 便血污秽而有胆臭 D. 便血,量多而色黑 E. 便污血而疼痛 参考答案:E