Q33: After more than four decades of research and development, a new type of jet engine is being tested that could eventually propel aircraft anywhere in the world within two hours or help boost cargoes into space at significantly lower costs than current methods permit. A. tested that could eventually propel aircraft anywhere in the world within two hours or help E. tested, and it could eventually have the capability to propel aircraft anywhere in the world within two hours or help 有人认为A中that是后置的定语从句还是目的状语从句有歧义。其实这个问题不难解决: 定语从句的前行词在从句中作某成份,可以是主语或宾语,相应的,前行词是不出现在定语从句中,而由who,whom,which来替代,如A选项中的that是跳跃指代句子的主语:jet engine。 而状语从句作为一个dependent clause, 要求从句中的主谓(宾)结构完整,比如:The weather is fine so that the students can go to picnic. 综上,A中不存在从句的语法成分不清楚的问题。 前面诸多大N已经指出了E的fatal错误,因此这道题应该选A。 |