A. enjoy hearing airplanes taking off and landing B. are. usually not troubled by the noise C. can easily tell sound from noise D. are often physically affected by the noise 参考答案:B 答案解析:文中they are not bothered by the noise即此意。
第15题: [单项选择]下列不属于癌前疾病或癌前病变的是() A. 黏膜白斑 B. 乳腺纤维腺瘤 C. 结肠多发性腺瘤性息肉病 D. 慢性萎缩性胃炎伴肠上皮化生 E. 皮肤慢性溃疡 参考答案:B