第21题: [单项选择]These areas rely on agriculture almost ______ , having few mineral recourses and a minimum of industrial development. A. respectively B. extraordinarily C. incredibly D. exclusively 参考答案:D 答案解析:[解析] D选项“exclusively排外地,专有地”符合题意,如:“Most importantly, if all of us get news and information exclusiv
第22题: [单项选择]锻造时对金属加热的目的是()。 A. 消除内应力 B. 提高强度 C. 提高韧性 D. 提高塑性,降低变形抗力 参考答案:D