2012专四真题及答案
the+比较级..., the +比较级... 表示越怎么样就越怎么样,前半句是个状语从句,后半句为主句,根据前半句主语surface of the ground,谓语yields to,宾语the weight of a full-loaded truck, 后半句的完整形式为the greater the stress is to the truck, 强调一下后半句stress前一定要有定冠词the,特指卡车所受压力,所以A选项错误,D选项中只用了省略形式将be动词is省略,所以故选D。