小明准备在通用技术实践室利用木条加工如图a所示的榫卯结构。请根据题图完成下面小题。 (1) 构件1的结构如图b所示。下列构件2的设计方案中正确的是( ) A . B . C . D . (2) 下列工具中,加工构件2用不到的是( ) A . B . C . D . 答案:D
D As ____ mountains beyond our village are becoming greener and greener, they have become_________ home to a large amount of wild life. A. the; / B. the; a C./; a D. the; the