第21题: [单项选择]刺激性气体中毒防治的关键是 A. 眼结膜损伤 B. 咽喉炎 C. 肺炎 D. 肺水肿 E. 脑水肿 参考答案:D
第22题: [单项选择]One out of five bridges in the United States is outmoded . A. narrow B. obsolete C. illegal D. concrete 参考答案:B 答案解析:形容词辨析。outmoded过时的:outmoded ideas陈旧的观念。obsolete荒废的,陈旧的:an obsolete word已废的词。narrow狭窄的:a narrow path羊肠