第17题: [单项选择]The middle class mainly refers to people ______ . A. who were born as aristocrat B. who have the right to sit in the House of Lords C. who speak in many different local accents D. who are prosperous businessmen or professionals 参考答案:D 答案解析:细节题。选项D意为“那些比较富裕的生意人或专业人士”。第一段的倒数第二句说:“The middle class consists chiefly of well-to-do businessmen a
第33题: [多项选择]混凝土抗冻性试验中,下列说法正确的是()。 A. 擦去试件表面水分,称得原始质量,并测量初始动弹性模量 B. 试件装入镀锌铁皮桶内,注入海水,水面应高于试件顶面20mm C. 一次冻融循环时间应控制在2.5~4.0h之内 D. 每次检查完毕后要按原样放回,不可调头 参考答案:A, B, C