第30题: [单项选择]Whom ______ this pair of glasses belong to and whose ______ the glasses on the table A. does;is B. do;are C. does;are D. do;is 参考答案:C 答案解析:“this/the pair of+名词”作主语,谓语动词用单数;glasses,trousers,clothes等复数名词作主语,谓语动词则用复数。
第31题: [单项选择]固位力最好的修复体是() A. 双面嵌体 B. 3/4冠 C. 铸造金属全冠 D. 锤造金属全冠 E. 塑料全冠 参考答案:C